* Makefile.in (REMOTE_OBS): Rename from REMOTE_O, append
value of NETROM_OBS.
(NETROM_OBS): New variable.
* remote-nrom.c: New file, NetROM target support.
* config/a29k/a29k-udi.mt, config/i960/vxworks960.mt: Use
REMOTE_OBS instead of REMOTE_O.
start-sanitize-arc
* config/arc/arc.mt: Ditto.
end-sanitize-arc
* config/arc/arc.mt: new target makefile for arc processor.
* config/arc/tm-arc.h: new target header for arc processor.
* config/arc/go32.mh: new go32 host makefile for arc processor.
* config/arc/xm-go32.h: new go32 host header for arc processor.