* config/tc-mips.h (tc_frob_file): Define.

	* config/tc-mips.h (tc_frob_file): Define.
	(mips_frob_file): Declare.
	* config/tc-mips.c (struct mips_hi_fixup): Define.
	(mips_hi_fixup_list): New static variable.
	(imm_unmatched_hi): New static variable.
	(md_assemble): Clear imm_reloc, imm_unmatched_hi, and
	offset_reloc.  Pass imm_unmatched_hi to append_insn.
	(append_insn): Add unmatched_hi parameter.  If it is set, add the
	new fixup to mips_hi_fixup_list.  Change all callers.
	(mips_ip): Set imm_unmatched_hi when appropriate.
	(mips_frob_file): New function.