inclhack.def (hpux_maxint, [...]): Remove.

inclhack.def (hpux_maxint, [...]): Remove.

	* inclhack.def (hpux_maxint, limits_ifndefs, math_huge_val_ifndef,
	svr4__p, undefine_null): Remove.
	* fixincl.x: Regenerate.
	* tests/base/AvailabilityMacros.h, tests/base/com_err.h: New.
	* tests/base/sys/param.h: Remove.
	* tests/base/curses.h, tests/base/math.h, tests/base/testing.h,
	tests/base/sys/limits.h: Update.

From-SVN: r90594