* nlm{32,64}-target.h: Remove.

	* nlm{32,64}-target.h:  Remove.
	* nlm-target.h:  New file, merged from nlm{32,64}-target.h
	* libnlm.h (NLM_ARCH_SIZE):  Define to ARCH_SIZE.
	* nlm.c (ARCH_SIZE):  Remove define to zero.
	* nlm32-gen.c (ARCH_SIZE):  Define to 32.
	* nlm32-gen.c (JUMP_TABLE_PREFIX):  Define to nlm32.
	* nlm{32,64}-gen.c (nlm-target.h):  Include.
	* targets.c, libnlm.h, nlm.c, nlm{32,64}-gen.c, nlm{32,64}.c,
	nlmcode.h:  Convert prefixes from bfd_nlm<size> to just
	nlm<size>, and use macros select size.