NetBSD patches from Gordon W. Ross <gwr@mc.com>:

	NetBSD patches from Gordon W. Ross <gwr@mc.com>:
	* vaxnetbsd.c: New file.
	* netbsd-core.c: Clean up.  Remove unused macros.  Use netbsd
	rather than netbsd_core.
	* targets.c (vaxnetbsd_vec): Declare.
	(bfd_target_vector): Add vaxnetbsd_vec.  If NETBSD_CORE is
	defined, add netbsd_core_vec.
	* configure.in: Set COREFILE for alpha*-*-netbsd* and
	powerpc-*-netbsd* to netbsd-core.lo.  If COREFILE is
	netbsd-core.lo, set COREFLAG to -DNETBSD_CORE.
	* config.bfd (alpha*-*-netbsd*): New target.
	* Makefile.am: Rebuild dependencies.
 	(BFD32_BACKENDS): Add vaxnetbsd.lo.
	(BFD32_BACKENDS_CFILES): Add vaxnetbsd.c.
	* configure, Makefile.in: Rebuild.