Makefile.in (lang_checks): Add.

Makefile.in (lang_checks): Add.

gcc:
	* Makefile.in (lang_checks): Add.
	(check-c++, check-f77, check-java, check-g++, check-g77,
	check-objc): Remove hardcoded targets.
	* doc/sourcebuild.texi: Document testsuite hooks.
	* objc/Make-lang.in (check-objc, lang_checks): Add.

gcc/cp:
	* Make-lang.in (check-g++, lang_checks): Add.

gcc/f:
	* Make-lang.in (check-f77, lang_checks): Add.

gcc/java:
	* Make-lang.in (check-java): Add.

gcc/treelang:
	* Make-lang.in: Remove obsolete comment.

From-SVN: r73758