* trad-core.c: Don't include <sys/file.h>.
* i386linux.h: Include <sys/file.h>.
* coff-m68k-un.c: new file to handle names with underscores on
svr3 machines.
* coff-m68k.c (m68k_rtype2howto): added #ifdef ONLY_DECLARE_RELOCS
to not duplicate the function in the executable.
(TARGET_SYM, TARGET_NAME, NAMES_HAVE_UNDERSCORE): new macros needed
by coff-m68k-un.c.
* coffcode.h (MC68KBCSMAGIC): case added.
* targets.c: Add m68kcoffun_vec.
* configure.host: added support for Bull dpx/2.
* config/dpx2.mh, hosts/dpx2.h: new files.
* Makefile.in: added target coff-m68k-un.
