[OpenJDK 2D-Dev] Request for review: Additional fix for JDK-7159455

[Clemens Eisserer]

As usual, seconds after sending a review request I somewhere find
another issue - sorry.
Please instead of webrev.01, review
http://cr.openjdk.java.net/~ceisserer/fix12/webrev.02/

In the previous version, I assumed not using a mask means a
quadrant-rotated transform, which is not correct as the mask can also
be ommited in any case when nearest neighbour interpolation is used.

Thanks, Clemens