PR libgfortran/15930
	* fixinc/inclhack.def (irix___generic1, irix___generic2): New.
	* fixinc/fixincl.x: Regenerate.
	* fixinc/tests/base/internal/math_core.h: New file.

Co-Authored-By: David Billinghurst <David.Billinghurst@riotinto.com>

From-SVN: r85962