* config/i386/nm-gnu.h: Removed.

* config/i386/nm-gnu.h: Removed.
* config/i386/nm-i386gnu.h: New file.
(THREAD_STATE_FLAVOR, THREAD_STATE_SIZE,
THREAD_STATE_SET_TRACED, THREAD_STATE_CLEAR_STATE, ATTACH_DETACH):
Moved here from ...
* config/i386/tm-i386gnu.h: ... here.  Removed.
* config/i386/xm-i386gnu.h: Removed.
* config/i386/i386gnu.mh (XM_FILE): Set to xm-i386.h.
(NAT_FILE): Set to nm-i386gnu.h.
* config/i386/i386gnu.mt (TDEPFILES): Add i386gnu-tdep.o.
* i386-tdep.c: New file.
* Makefile.in (ALLDEPFILES): Add i386gnu-nat.c and i386gnu-tdep.c.
(i386gnu-tdep.o): Specify dependencies.