* elfcode.h: Use memset not bzero.

	* elfcode.h: Use memset not bzero.
	* 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.