Update to the 20050427 snapshot of GCC 3.3.6. On the way, remove all traces
of the Java frontend and libgcj which speeds up the build significantly and
reduces the number of file conflicts with lang/gcc34 to a minimum (which is,
in turn, needed for proper building and testing of the alpha port). Everyone
with interest in Java really should use lang/gcc34 or, better, lang/gcc40.