Merge SH-2 trapa fixups from Mark.

Merge SH-2 trapa fixups from Mark.

2006-10-16  Mark Shinwell  <shinwell@codesourcery.com>

	* libc/sysdeps/linux/sh/vfork.S: Use __SH_SYSCALL_TRAP_BASE.
	Also use __CONFIG_SH2__ rather than __sh2__, for consistency.
	* libc/sysdeps/linux/sh/syscall.c: Use __SH_SYSCALL_TRAP_BASE.
	* libc/sysdeps/linux/sh/bits/uClibc_arch_features.h: Use
	__CONFIG_SH2__ rather than __sh2__, for consistency.
	* libc/sysdeps/linux/sh/bits/syscalls.h (__SH_SYSCALL_TRAP_BASE):
	New.
	Use instead of hard-coded trap numbers in the various __NR_<name>
	macros.
	* libc/sysdeps/linux/sh/clone.S: Use __SH_SYSCALL_TRAP_BASE.
	Also use __CONFIG_SH2__ rather than __sh2__, for consistency.
	* libc/sysdeps/linux/sh/crti.S: Disable GOT-related code if
	__HAVE_SHARED__ is not set.
	* libc/sysdeps/linux/sh/pipe.c (pipe): Use __SH_SYSCALL_TRAP_BASE.