[OpenJDK 2D-Dev] [9] RFR JDK-8153208: TIFFImageReadParam: should "contains()" check be appropriate for addAllowedTagSet() method?

[Brian Burkhalter]

Please review at your convenience.

Issue:  https://bugs.openjdk.java.net/browse/JDK-8153208
Patch:  http://cr.openjdk.java.net/~bpb/8153208/webrev.00/

If a given TIFFTagSet is already in the list of allowed tag sets, do not append 
it.

Thanks,

Brian