Patch: Fix libjava parallel make problems

[Andrew Haley]

Tom Tromey writes:
 > >>>>> "Mohan" == Mohan Embar <gnustuff@thisiscool.com> writes:
 > 
 > Mohan> After applying the patch, the problem doesn't manifest
 > Mohan> itself anymore, the build succeeds and I am able to run some
 > Mohan> simple tests.
 > 
 > Mohan> +all_java_class_files = $(all_java_source_files:.java=.class)
 > Mohan> +$(all_java_class_files): libgcj-@gcc_version@.jar
 > 
 > Please add a comment before the definition of all_java_class_files
 > explaining the logic.

Yeah, please do.  I don't understand this at all.  :-)

Andrew.