* mauve-libgcj: Add JLS1.0 and JLS1.1 tags, ignore Character.unicode
        test.
        * testsuite/libjava.mauve/xfails: Remove working tests DoubleTest,
        FloatTest and ObjectStreamClass. Add FAIL for Introspector.jdk11 tests
        that depend on awt code and BufferedByteOutputStream.interrupt.

From-SVN: r51893