* configure.in: Don't pass --with-stabs for mips*-sgi-irix6*o32.
	* configure. Regenerate.

	gcc:
	* config/mips/iris5gas.h (MDEBUG_ASM_SPEC): Override to match
	DWARF 2 default.

	* config/mips/dbxmdebug.h: New file.
	* config.gcc (mips-sgi-irix6*o32, mips-sgi-irix5*): Use it with
	gas and --with-stabs.

From-SVN: r67780