* targets.c (target_vector): Added nlm32_alpha_vec inside #ifdef

	* targets.c (target_vector): Added nlm32_alpha_vec inside #ifdef
	BFD64.
	* Makefile.in (BFD32_BACKENDS): Remove nlm32-alpha.o.
	(BFD64_BACKENDS): Add nlm32-alpha.o.  It depends on 64 bit
	support, even though it is for an Alpha in 32 bit mode.
	* configure.in (nlm32_alpha_vec): Set target64 to true.

	* nlm32-gen.c, nlm64-gen.c: Removed.  All nlm targets are
	different, so there is no point to providing a generic one.
	* libnlm.h: Don't bother to check for nlm_backend(bfd) being NULL
	in the backend accessor macros; that should no longer be possible.
	* targets.c (target_vector): Removed nlm32_big_generic_vec,
	nlm64_big_generic_vec, nlm64_little_generic_vec.
	* configure.in (nlm32_big_generic_vec, nlm32_little_generic_vec,
	nlm64_big_generic_vec, nlm64_little_generic_vec): Removed.
	* Makefile.in: Rebuilt dependencies, and
	(BFD32_BACKENDS): Removed nlm32-gen.o.
	(BFD64_BACKENDS): Removed nlm64-gen.o.
	(CFILES): Removed nlm32-gen.c and nlm64-gen.c.