Please review a cleanup and refactoring of FileDescriptor.java.The Unix and Windows versions are merged to ease maintenance remove replicated code
The FileCleanable class is extracted and SocketCleanable is updated.
Webrev: http://cr.openjdk.java.net/~rriggs/webrev-fd-cleanup-8189330/ Issue: https://bugs.openjdk.java.net/browse/JDK-8189330 Thanks, Roger
