[8] Review request for JDK-8130242 DataFlavorComparator transitivity exception

[mikhail cherkasov]

Hello,

Please review the almost direct backport of
https://bugs.openjdk.java.net/browse/JDK-8130242
to jdk8: http://cr.openjdk.java.net/~mcherkas/8130242/webrev/
The difference is only that code location in jdk8 and 9 is different.

jdk9 changeset: http://hg.openjdk.java.net/jdk9/jdk9/jdk/rev/74513e3d04b1
jdk9 review: 
http://mail.openjdk.java.net/pipermail/awt-dev/2015-July/009606.html

Thanks,
Mikhail.