[9] Review request for 8065098 JColorChooser no longer supports drag and drop between two JVM instances

[Alexander Scherbatiy]

Hello,
Could you review the fix:
  bug: https://bugs.openjdk.java.net/browse/JDK-8065098
  webrev: http://cr.openjdk.java.net/~alexsch/8065098/webrev.00

  The issue appears after the fix 8024061 Exception thrown when drag 
and drop between two components is executed quickly.
  In some way the mime type of the dropped color has 
javaJVMLocalObjectMimeType on the second JVM.

  The issue should be fixed in JDK 8 as the regression so the easy safe 
fix that prevents ClassCastException is added.
  The full fix that includes a proper synchronization between XAWT and 
EDT threads on Linux can be added later.

Thanks,
Alexandr.