PATCH: Improve Java build times

[Tom Tromey]

>>>>> "Mark" == Mark Mitchell <mark@codesourcery.com> writes:

Mark> Do you think those are related to my patch?  When I looked into
Mark> these at one time, I thought that they predated my patch -- but
Mark> I could of course be wrong.

The JNI test failures are new on the trunk.  I haven't yet tried to
track them down.  I suspect some kind of runtime link problem since we
don't try to link against libstdc++.  ISTR seeing something like that
in my (very limited) debugging of the problem a few weeks ago.

Tom