Make-lang.in (ada/treeprs.ads, [...]): Use unique subdirectories of ada/bldtools to avoid make -jN failures.

	* ada/Make-lang.in (ada/treeprs.ads, ada/einfo.h, ada/sinfo.h,
	ada/nmake.adb, ada/nmake.ads): Use unique subdirectories of
	ada/bldtools to avoid make -jN failures.

From-SVN: r96531