Merge commit 'ebef9f5a56d7df91e010a177a80cfc8dbe394305'

* commit 'ebef9f5a56d7df91e010a177a80cfc8dbe394305':
  time: Use clock_gettime if the monotonic clock is available

Conflicts:
	configure

The change to av_gettime() isnt merged, a patch will be posted to the mailing list
that would do the switch

Merged-by: Michael Niedermayer <michaelni@gmx.at>

diff --cc configure
index 8f0b915,af0128a..b1814db
--- 1/configure
--- 2/configure
+++ b/configure
@@@ -4654,8 -4039,9 +4654,8 @@@ check_func_headers malloc.h _aligned_ma
  check_func  ${malloc_prefix}memalign            && enable memalign
  check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
  
 -check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
 -    check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt; }
 -
 +check_func  access
- check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
++check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt; }
  check_func  fcntl
  check_func  fork
  check_func  gethrtime