Update.

Update.

	* sysdeps/unix/sysv/linux/i386/pthread_once.S: Use ENTER_KERNEL instead
	of int $0x80.
	* sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/libc-lowlevelmutex.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/lowlevelcond.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/lowlevelmutex.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/lowlevelrwlock.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/lowlevelsem.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/pthread_barrier_wait.S: Likewise.

	* sysdeps/unix/sysv/linux/i386/lowlevellock.h: Add support for using
	sysenter.
	* sysdeps/unix/sysv/linux/i386/lowlevelsem.h: Likewise.

	* sysdeps/i386/tls.h: Unconditionally include <dl-sysdep.h>.