openat*: use a static function with the different type and strong_alias_untyped

No need for hidden openat64
_lfs_64.h does not allow to compile *64.c if LFS is not enabled, remove guard

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

llseek.c: use off64_t instead of loff_t as in header

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

mmap64.c: use void * as in header, disable code that can't happen

Reorganize a bit.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

avoid circular dependency in lseek and llseek, providing a stub lseek

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

getopt.h: cleanup header, remove anything already in cdefs.h

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

_stdio.c: pthread.h was already included by _stdio.h

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

handle the type mismatch of ftell[o] and fseek[o] if long int != off_t

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

signal: cleanup, include only headers that are needed

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

add simplified __sigemptyset for internal use

Use __sigemptyset instead of sigemptyset.
Remove hidden sigemptyset.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

resolv.c: shrink code a bit in getnameinfo.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

addr.c: get rid of a compiler warning

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

types.h: both icc and tendra support long long

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

ssp: rework, sync messages with the ones in glibc

Touch signals only if DODEBUG is enabled.
Make the signal selection dependent on DODEBUG, as last resort use SIGKILL.
Use internal functions with less arguments, some savings.
Fix a warning about unused argument.
Do not use openlog/closelog, while there remove their hidden versions.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

syslog.c: disable locking in setlogmask

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

ssp-local.c: make sure that -fstack-protector is not enabled when compiling file

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

syslog.c: no need for hidden vsyslog, use a static __vsyslog instead

It is only used within the same file.
Guard the visible version according to header.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

make UCLIBC_HAS_PROGRAM_INVOCATION_NAME and UCLIBC_HAS___PROGNAME independent options

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

tempname.c: remove unneeded attribute_hidden, change type to unsigned

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

wordexp.c: use vfork instead of fork on non-MMU archs

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

add LDSO_SAFE_RUNPATH config option

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

get_kernel_syms.c: reorganize, no need for attribute_unused in prototype

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

getgroups.c: reorganize, include param.h instead of defining MIN

Include only what is necessary.
Mark __syscall_getgroups __always_inline.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

_exit.c: add ABORT_INSTRUCTION

Warn if the arch has no  __UCLIBC_ABORT_INSTRUCTION__.
Run only one syscall, exit_group is not an exclusivity, use it if THREADS are enabled.
Guard according header.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

stdlib.c: remove comment about _Exit, it is provided in _exit.c

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

hppa/bits/atomic.h: include errno.h to get EFAULT/ENOSYS

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

add lcong48[_r]

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

getpt.c: no need for hidden posix_openpt

Prefer static inline instead of hidden (__bsd_getpt)

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

_exit.c: include the proper headers

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

munmap.c: do not include unistd.h

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

PORTING: remove obsolete comment about readelf

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

dl-iterate-phdr.c: no need for visible __dl_iterate_phdr, make it static

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

posix_fadvise: make posix_fadvise[64] similar on all archs

Remove all versions, that can be covered by the common one.
Drop incorrectly implemented fallback support, if __NR_fadvise64_64 is not available.
To support 64 bit ppc, move ppc support into common.
Cleanup including headers.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

i386/posix_fadvise64: remove fallback code, uClibc does not do that

Makefile.arch: include it only if ADVANCED_REALTIME is defined.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

splice,sync_file_range: mark them as GNU extensions

They can't be compiled if LFS is disabled, they are using off64_t.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

tee,vmsplice: mark them as GNU extensions

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

readahead.c: add correct guards

While there, remove unneeded headers.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

cacheflush.c: compile only if __NR_cacheflush is available

The header had to be removed under the guard, else asm/cachectl.h might
not be available at all.
While there, disable __cachectl prototype.
Use untyped strong_alias for cacheflush because char * != void *.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

dl-defs.h: avoid including dl-sysdep.h if compiling hostutils

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

mips/README: fix comment about file from which functions were copied

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

utils: expand search path to find dl-sysdep.h

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

_collate.c: avoid initialization warning

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

_fpmaxtostr.c: align comments, no code change

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

arm: avoid 2 compiler warnings

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

ldso: use _dl_strdup and _dl_dprintf only in ld-uClibc.so

Add support for %p to _dl_dprintf for later corrections in debug messages.
Disable _dl_debug_file if LD debugging is not enabled and change it's use to 2.

The use of dprintf in elfinterp.c will spit out warnings, will be fixed in the
reworked ldso.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

sh: remove longjmp.c, the common is good for sh

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

sh: add back clone and vfork for non-NPTL

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

Rules.mak: add ldso search paths independently of NPTL

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

uClibc_pthread.h: remove __pthread_mutex_destroy, unused

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

adapt regex to new regex.h

While there, add some defines to help build, cleanup

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

ftw.c: errno.h has to be included before undefining _LIBC

While, cleanup a bit

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

regex_old.c: adapt to new regex.h

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

dl-string.h: include dl-defs.h instead of dl-sysdep.h

Include stddef.h instead of defining NULL
Adapt guard to file name.
Reorder includes a bit.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

dl-defs.h: include dl-sysdep.h before fallbacks.

dl-sysdep.h has to come before the fallbacks in dl-defs.h,
else the wrong macros are used.

While there adapt the guard to the file name.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

dl-elf.h: add some includes and fix comments

While there change the guard of the file

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

ldso/include: change guard of headers to reflect the file names.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

regex.h: sync with glibc, making it more POSIX-like

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libdl.c: disable dlinfo

dlinfo is a GNU extension, it should be of the same type
as on glibc.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

dl-string.h: change IS_IN_libdl guard to IS_IN_rtld

The guard is changed to allow to be used the file in libc as well.
Include string.h (although already included by ldso.h).
Guard the rest of the file according to config options.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

dl-string.h: use __powerpc__ guard instead of powerpc

powerpc guard depends on the compiler options, __powerpc__ should
work all the time.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

dl-string.h: remove mips related guard

This can't happen, __mips__ was already checked earlier

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

remove uClibc_mutex.h on install

Add a comment to uClibc_stdio.h to keep macros in sync with uClibc_mutex.h

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

ldd.c: change syntax, no size and no functional change

Proposed-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

_scanf.c: fix to signedness warnings

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

errno, h_errno: correct them for non-TLS

Move h_errno related stuff to separate file.
Do not hide errno and h_errno for non-TLS, else it keeps being 0.
Make __[h_]errno_location weak for non-TLS.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

avr32: common do_rem is good for it

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libdl: no need for _dl_strstr in libdl, use strstr

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

ppc/elfinterp.c: fix comment typos

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

dl-hash.h: remove unused _dl_symbol and unneeded prototypes

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

__uClibc_main.c: do not include unused headers

Remove unneeded headers.
Guard inclusion of fcntl.h.
While there, remove an obsoleted comment.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

getpagesize.c, unistd.h: hide __pagesize

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

malloc.h: use sysconf(_SC_PAGESIZE) instead of __pagesize

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libdl.c: hide dl_cleanup

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

dl-elf.h: remove unused prototype

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

jmp-unwind.c: add hidden _longjmp_unwind

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

internals.h: use sysconf(_SC_PAGESIZE) instead of __pagesize

Rename PAGE_SIZE to __PAGE_SIZE to be sure that we do not get the
definition from uClibc_page.h.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libc-symbols.h: fix weak functions handling

Move weak_function and weak_const_function under HAVE_WEAK_SYMBOLS guard
and provide fallbacks.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

ldd.c: reduce size

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libdl.c,dl-string.h: do not use inlined _dl_memset and others in libdl

Use the one from libc.
While there, remove unused _dl_strncmp() and superfluos static forward declarations.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

Makefile.commonarch: use proper CFLAGS for jmp-unwind.c

Filter out libpthread CFLAGS

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

nios2,xtensa: common uClibc_page.h is good for them

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

xtensa-config.h: remove XCHAL_MMU_MIN_PTE_PAGE_SIZE used only in uClibc_page.h

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

ldconfig.c: fix strncmp() usage

While there, remove unused __strtok.
Use err() and warn() if uClibc provides them (if ldconfig is not static).

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

getconf.c: fix noreturn warnings

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

iconv: Do not include __iconv_codesets into iconv utility

Host iconv needs only L_iconv_main defined and __iconv_codesets
has to included, as host system does not provide it.
Keep __iconv_codesets out of iconv linked against uClibc.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libnsl,libresolv: do not include unneeded features.h

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

popen.c: get rid of a shadow warning

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

errno and *_init cleanup

Define a common view of __errno_location, __h_errno_location in common header
and use that everywhere, __uClibc_main.c is no special.
The rule adopted:
for enabled threads we make in libc the __GI_x() variants strong, x() weak
and (should) provide another strong x() in libpthread.
If threads are disabled, even the __GI_x() variants are weak.

_stdio_init,_stdio_term,_locale_init: make all hidden weak in common header

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

librt: provide missing prototypes for mq_timedreceive,mq_timedsend

If ADVANCED_REALTIME is disabled, these prototypes are missing and
librt_hidden_proto() fails.
Makefile.in: added a comment, we build mq_timedreceive/mq_timedsend
on NPTL even if ADVANCED_REALTIME is disabled.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

librt: get rid of visible __mq_timed(send,receive)

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

Config.in.arch: remove UCLIBC_FORMAT_ELF config option

Unused option (and is in !ARCH_HAS_MMU guarded section, but depends on ARCH_HAS_MMU)

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

uClibc_stdio.h: change the guard used to include stdio-lock.h

My intention was to get rid of uClibc_mutex.h completely on install, but it
introduces other dependencies. It affects anyway only the installed case.

Note: since NPTL was added, the FILE structure changes between the build
and the installed version. I wanted to fix this by the earlier commit.
Reverting the behaviour to IMHO a wrong one.

While there, remove libc-lock.h and stdio-lock.h on install (even though
glibc has them -wrongly- installed).

Reported-by: Tony Wu <tung7970@gmail.com>
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

utime.c,utimes.c: include headers only when needed

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

__uClibc_main.c: make __uClibc_init hidden

The linker can cope with it if it is hidden.
No need for the __GI___uClibc_init.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

clock_{g,s}ettime.c,{create,delete}_module.c: cleanup

Do not include unneeded headers.
Move headers to the needed place.
Fix a comment typo.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

wrapsyscall.c: include proper header for epoll

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

add epoll_pwait()

Change const to __const while at it.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

sysconf.c: the clock_getres function is good for NPTL as well

Even if glibc reuses the syscall (bloat), we can reuse the function.
Make sure, that we use it only if it is provided by the syscall
and the function is really around (UCLIBC_HAS_REALTIME disables it),
else we get into a loop.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

clock_getres.c: include unistd.h unless syscall is defined

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

Config.in: NPTL does not compile with disabled UCLIBC_HAS_REALTIME

Select it.

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

chdir.c: simplify code

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>