* config/tc-mips.c: Replace GP in comments by $gp.

	* config/tc-mips.c: Replace GP in comments by $gp.
	(mips_big_got): Initialize.
	(mips_trap): Initialize.
	(load_address): Use mips_gp_register instead of hardcoded value.
	Remove dbl parameter, use HAVE_32BIT_ADDRESSES instead.
	(macro): Use mips_gp_register instead of hardcoded value.
	(macro2): Change load_address calls.
	(md_pcrel_from): Comment formatting.
	(s_cpload): Use mips_gp_register instead of hardcoded value.
	(s_cprestore): Likewise. Comment formatting.
	(s_gpword): Fix data type.
	(s_cpadd): Use mips_gp_register instead of hardcoded value.
	(nopic_need_relax): Replace GP in comments by $gp.
	(mips_elf_final_processing): Better comment.