* config/tc-mips.c: Check ECOFF_DEBUGGING rather than

	OBJ_ECOFF in many cases.
	(mips_any_noreorder): New variable.
	(mips_cprestore_offset): Initialize to -1.
	(mips_frame_reg): New variable.
	(RELAX_ENCODE, RELAX_OLD, RELAX_NEW, RELAX_RELOC1,
	RELAX_RELOC2, RELAX_RELOC3, RELAX_WARN): New macros.
	(md_pseudo_table): Handle "gpword" and "cpadd".
	(md_begin): Initialize ok to false.  If OBJ_ELF, set alignment
	of text, data and bss sections to 4.  Set alignment of
	.reginfo section to 2.  If ECOFF_DEBUGGING, create .mdebug
	section.
	(ALIGN_ERR, ALIGN_ERR2): Removed unused and useless alignment
	check.
	(append_insn, macro_build, macro_build_lui): Take place
	argument.  Changed all callers.
	(append_insn): If appending a nop, don't emit one.
	(macro_build): Changed assertion for 'i', 'j', 'o' case.
	(gp_reference): Removed.
	(load_address): New function.
	(macro): If mips_noreorder is used, set mips_any_noreorder.
	Extensive changes to handle GP and PIC symbols differently.
	Build both possible code choices using a variant frag, and
	make a final decision at the end of assembly when all
	information is known.  Added PIC support for all symbol
	references.
	(mips_ip): Don't permit anything but a number after $ for a
	coprocessor register.  Don't use .lit4 or .lit8 sections when
	generating PIC code.  If OBJ_ELF, set alignment of .lit4 or
	.lit8 section to 4.
	(md_apply_fix): Accept and ignore GOT16 and GPREL32 relocs.
	(s_change_sec): Set alignment of ELF .rodata or .sdata section
	to 4.
	(s_mipsset): If .set noreorder, set mips_any_noreorder.
	(s_cpload): Ignore .cpload if not generating PIC code.  Warn
	if .cpload is not in noreorder section.
	(s_cprestore): Ignore .cprestore if not generating PIC code.
	(s_gpword, s_cpadd): New functions.
	(tc_get_register): Added frame argument; if true, set
	mips_frame_reg to return value.  Changed all callers.
	(md_estimate_size_before_relax): Don't error out, but instead
	determine how much a frag should grow.
	(tc_gen_reloc): Return multiple relocs if appropriate, as
	determined by md_estimate_size_before_relax.
	(md_convert_frag): New function.
	(mips_elf_final_processing): Set ELF header flags based on
	mips_any_noreorder and mips_pic.
	* config/tc-mips.h (RELOC_EXPANSION_POSSIBLE): Define.
	(MAX_RELOC_EXPANSION): Define to be 3.
	(md_relax_frag): Define to be 0.
	(md_convert_frag): Don't define.
	(tc_get_register): Changed declaration.

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