* configure.in: Define TARGET_BYTES_BIG_ENDIAN if endian is set.

	* configure.in: Define TARGET_BYTES_BIG_ENDIAN if endian is set.
	Don't set targ or gas_target.  Define SCO_ELF and
	TARGET_SOLARIS_COMMENT when appropriate.  Don't substitute for
	target_frag.
	* Makefile.am: Remove @target_frag@.
	(INCLUDES): Remove $(INTERNAL_CFLAGS), $(CROSS), $(HDEFINES), and
	$(TDEFINES).
	(dep-am): Mark as phony.
	* acconfig.h: Add TARGET_BYTES_BIG_ENDIAN, TARGET_SOLARIS_COMMENT,
	and SCO_ELF.
	* config/arm-big.mt, config/arm-lit.mt: Remove.
	* config/mips-big.mt, config/mips-lit.mt: Remove.
	* config/ppc-big.mt, config/ppc-lit.mt: Remove.
	* config/ppc-sol.mt: Remove.
	* config/i386coff.mt, config/m68kcoff.mt: Remove.
	* config/m88kcoff.mt: Remove.
	* config/sco5.mt: Remove.
	* configure, config.in, Makefile.in: Rebuild.