Cleanup new JDK directory support in GCJ.

2009-03-03  Andrew John Hughes  <ahughes@redhat.com>

	* Makefile.am:
	Remove dangling src.zip and javac symlinks.
	Fix java.security symlink to use toolexeclibdir
	as classpath/resource/Makefile.am does.
	* Makefile.in,
	* configure: Regenerated.
	* configure.ac: Drop hard-coded prefix,
	thus removing sdk_dir and making jre_dir="jre".
	Map x86_64 to amd64 as used by OpenJDK.
	* gcj/Makefile.in,
	* include/Makefile.in,
	* testsuite/Makefile.in: Regenerated.

From-SVN: r144576