* Makefile.in (ALLDEPFILES): Add nbsd-tdep.c.

* Makefile.in (ALLDEPFILES): Add nbsd-tdep.c.
(alphanbsd-tdep.o): Add nbsd-tdep.h to dependency list.
(nbsd-tdep.o): New dependency list.
* alphanbsd-tdep.c: Don't include solib-svr4.h.  Include
nbsd-tdep.h.
(alphanbsd_solib_svr4_fetch_link_map_offsets): Remove.
(alphanbsd_init_abi): Use nbsd_lp64_solib_svr4_fetch_link_map_offsets.
* nbsd-tdep.c: New file.
* nbsd-tdep.h: New file.
* shnbsd-tdep.c: Don't include solib-svr4.h.  Include
nbsd-tdep.h.
(shnbsd_solib_svr4_fetch_link_map_offsets): Remove.
(shnbsd_init_abi): Use nbsd_ilp32_solib_svr4_fetch_link_map_offsets.
* config/alpha/nbsd.mt (TDEPFILES): Add nbsd-tdep.o.
* config/sh/nbsd.mt (TDEPFILES): Ditto.