* configure.in (case ${host}): Map *-*-sysv4* to gas_host=sysv.

	* configure.in (case ${host}):  Map *-*-sysv4* to gas_host=sysv.
	* configure.in (case ${generic_target}):  Add i[34]86-*-sysv4*
	case to set obj_format=elf.  Must go before i386-*-sysv* case that
	sets obj_format=coffbsd.  Add *-*-sysv4* to *-*-elf and
	*-*-solaris case, and move to before *-sysv* case that wants to
	set obj_format to coff.
	* config/tc-i386.c (i386_operand): Change all 'exp.X_op' to
	'exp->X_op'.
	* config/tc-i386.c (md_apply_fix):  Fix valp to be 'valueT *' for
	BFD_ASSEMBLER case.