* config/mips/t-iris6gld: Renamed to ...
	* config/mips/t-irix-gld: ... this.
	* config.gcc (mips-sgi-irix6*): Reflect this
	(mips-sgi-irix5*): Use it with GNU ld.

	* config/mips/irix6-crti.asm, config/mips/irix6-crtn.asm: Renamed
	to ...
	* config/mips/irix-crti.asm, config/mips/irix-crtn.asm: ... this.
	* config/mips/t-irix-gld: Reflect this.
	* config/mips/iris6gld.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.

	* config/mips/iris5gld.h: New file.
	* config.gcc (mips-sgi-irix5*): Use it with GNU ld.
	Only use collect2 without gas.

	* config/mips/iris6.h (IRIX6_STARTFILE_SPEC, IRIX6_ENDFILE_SPEC):
	Renamed to IRIX_STARTFILE_SPEC, IRIX_ENDFILE_SPEC.
	(STARTFILE_SPEC, ENDFILE_SPEC, SUBTARGET_EXTRA_SPECS): Reflect this.
	* config/mips/iris6gld.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.

	* config/mips/iris6.h (SUBTARGET_EXTRA_SPECS): Moved ...
	* config/mips/iris5.h: ... here.

	* config/mips/iris5.h (STARTFILE_SPEC, ENDFILE_SPEC): Renamed to
	IRIX_STARTFILE_SPEC, IRIX_ENDFILE_SPEC.
	(STARTFILE_SPEC, ENDFILE_SPEC): Define.

	* config/mips/iris5gas.h (STARTFILE_SPEC, ENDFILE_SPEC): Simplify
	using irix_startfile_spec, irix_endfile_spec.

From-SVN: r77978