* libbfd.c (bfd_zmalloc): Call bfd_xmalloc instead of malloc.

	* libbfd.c (bfd_zmalloc): Call bfd_xmalloc instead of malloc.
	(bfd_xmalloc, bfd_xmalloc_by_size_t): Functions deleted.
	* libbfd-in.h: Define them as macros calling xmalloc and declare
	xmalloc.
	* libbfd.h: Rebuilt.
	* ecofflink.c hash.c ieee.c opncls.c (obstack_chunk_alloc): Define
	to be xmalloc, not bfd_xmalloc_by_size_t.