Patch: PR 21372 (FileChannel.tryLock())

[Tom Tromey]

>>>>> "Andrew" == Andrew Overholt <overholt@redhat.com> writes:

Andrew> This patches fixes FileChannel.tryLock() which is supposed to
Andrew> return null if it could not acquire a lock.  See libgcj PR
Andrew> 21372 for a test case.  It also fixes FileLock.toString() to
Andrew> match that of other implementations.

This looks good.  I'm checking it in universally.

Tom