* config/i386/xm-beos.h, config/i386/xm-isc.h,
	config/i386/xm-next.h, config/i386/xm-sco.h,
	config/i386/xm-sco5.h, config/m68k/xm-plexus.h,
	config/m88k/xm-m88k.h: Delete.

	* config/i386/xm-djgpp.h: Don't define __MSDOS__.
	* config/romp/xm-romp.h: Don't define bcopy.
	* config/rs6000/xm-beos.h: Don't define bcopy, HAVE_VPRINTF,
	HAVE_PUTENV, HAVE_RENAME, or USE_C_ALLOCA.

	* config.gcc: Remove references to deleted files.

From-SVN: r41061