mips.h (MASK_UNUSED1): Remove.

mips.h (MASK_UNUSED1): Remove.

	* config/mips/mips.h (MASK_UNUSED1): Remove.
	(MASK_XGOT, TARGET_XGOT): Define.
	(TARGET_SWITCHES): Add an entry for -mxgot.
	(ASM_SPEC): Map -mxgot to -xgot.
	* config/mips/mips.c (mips_symbol_insns): Use TARGET_XGOT to decide
	whether we're using a big-GOT sequences.
	(mips_legitimize_const_move, mips_expand_call): Likewise.
	(override_options): Revert 2003-01-09 change.
	* doc/invoke.texi: Document -mxgot.

From-SVN: r71018