Update.

Update.

	* malloc/malloc.c (ptmalloc_init): Also initialize __libc_pagesize
	if no threads are used.

	* libio/iofwrite.c: Add weak alias for _unlocked function if not
	_IO_MTSAFE_IO.
	* libio/iofread.c: Likewise.
	* libio/iofgets.c: Likewise.
	* libio/iofputs.c: Likewise.

	* sysdeps/generic/bits/libc-lock.h (__libc_cleanup_end): New
	definition.