* Makefile.in (ALLDEPFILES): Add sparc64nbsd-nat.c,

* Makefile.in (ALLDEPFILES): Add sparc64nbsd-nat.c,
sparcnbsd-nat.c, and sparcnbsd-tdep.c.
(sparc64nbsd-nat.o)
(sparcnbsd-nat.o)
(sparcnbsd-tdep.o): New dependency lists.
* NEWS: Note new UltraSPARC NetBSD native configuration.
* configure.host (sparc64-*-netbsd*): New host.
* configure.tgt (sparc-*-netbsdelf*)
(sparc-*-netbsd*): Set gdb_target to nbsd.
(sparc64-*-netbsd*): New target.
* sparc64nbsd-nat.c: New file.
* sparcnbsd-nat.c: New file.
* sparcnbsd-tdep.c: New file.
* sparcnbsd-tdep.h: New file.
* config/sparc/nbsd.mt: New file.
* config/sparc/nbsd64.mh: New file.
* config/sparc/nbsd64.mt: New file.
* config/sparc/nbsdaout.mh (NATDEPFILES): Remove corelow.o,
sparc-nat.o, and solib.o.  Add sparcnbsd-nat.o.
(HOST_IPC): Remove.
* config/sparc/nbsdaout.mt: Remove.
* config/sparc/nbsdelf.mh (NATDEPFILES): Remove corelow.o,
sparc-nat.o, and solib.o.  Add sparcnbsd-nat.o.
(HOST_IPC): Remove.
* config/sparc/nbsdelf.mt: Remove.
* config/sparc/nm-nbsd.h: Update copyright years.  Remove all
sparc-nat.c compatiblity defines.
* config/sparc/tm-nbsd.h: Update copyright years.  Include solib.h.
(GDB_MULTI_ARCH): Set to GDB_MULTI_ARCH_PARTIAL.
* config/sparc/tm-nbsd64.h: New file.
* config/sparc/tm-nbsdaout.h: Remove.
* config/sparc/xm-nbsd.h: Remove.