* config/mips/iris5.h (SET_FILE_NUMBER): Moved here from iris3.h.
	Undef before redefinition.
	(LABEL_AFTER_LOC): Likewise.
	(DEFAULT_SIGNED_CHAR): Likewise.
	(ASM_OUTPUT_ASCII): Moved here from iris4.h.
	Fix IRIX spelling.

	* config/mips/iris3.h: Remove, unused.
	* config/mips/iris4.h: Likewise.

	* config/mips/mips.h (STACK_ARGS_ADJUST): Remove, unused.

	* config/mips/iris5.h (TARGET_DEFAULT): Move ...
	* config.gcc (mips-sgi-irix6*o32, mips-sgi-irix5*): ... here to
	target_cpu_default.

	* config/mips/iris5.h: Move explicit includes ...
	* config.gcc (mips-sgi-irix6*o32, mips-sgi-irix5*): ... here.

	* config/mips/iris6.h (MIPS_ISA_DEFAULT, MIPS_ABI_DEFAULT): Move ...
	* config.gcc (mips-sgi-irix6*, mips-sgi-irix5cross64): ... here to
	tm_defines.

	* config/mips/iris6.h (TARGET_DEFAULT): Move ...
	* config.gcc (mips-sgi-irix6*, mips-sgi-irix5cross64): ... here to
	target_cpu_default.

	* config/mips/iris6.h: Fix IRIX spelling.
	(MULTILIB_DEFAULTS): Undef before redefinition.

	* config/mips/iris6.h: Move explicit includes ...
	* config.gcc (mips-sgi-irix6*, mips-sgi-irix5cross64): ... here.

From-SVN: r68808