* malloc/mtrace.c (__libc_malloc, __libc_free, __libc_realloc,

	* malloc/mtrace.c (__libc_malloc, __libc_free, __libc_realloc,
	__libc_memalign): Add prototypes and libc_hidden_proto resp.
	defines for !_LIBC.
	(tr_freehook): Call __libc_free instead of free.
	(tr_mallochook): Call __libc_malloc instead of malloc.
	(tr_reallochook): Call __libc_realloc instead of realloc.
	(tr_memalignhook): Call __libc_memalign instead of memalign.
	* malloc/mcheck.c: Include stdlib.h.
	(__libc_malloc, __libc_free, __libc_realloc,
	__libc_memalign): Add prototypes and libc_hidden_proto resp.
	defines for !_LIBC.
	(freehook): Call __libc_free instead of free.
	(mallochook): Call __libc_malloc instead of malloc.
	(reallochook): Call __libc_realloc instead of realloc.
	(memalignhook): Call __libc_memalign instead of memalign.
	(mcheck): Call __libc_malloc and __libc_free instead of
	malloc and free.