RFR: 8189331 [testbug] java/io/Serializable/maskSyntheticModifier/MaskSyntheticModifierTest.java failed incorrect serialVersionUID

[Roger Riggs]

Please review a test fix to copy the golden Foo.class into the classpath 
instead of the current directory.

webrev:
  http://cr.openjdk.java.net/~rriggs/webrev-synthetic-8189331/

issue:
    https://bugs.openjdk.java.net/browse/JDK-8189331

Thanks, Roger