NEWT MonitorMode test cases: Add X11 XRandR commandline reset to UITestCase's AfterClass if available (X11).

In case a MonitorMode test case fails, force XRandR reset '-s 0 -o normal' at end of test class if X11.

Unit Test: TestScreenMode00cNEWT
Refine 95ffc6f73b460a24e8f117060de1d80ec85e4c25: Reset X11 XRandR only for MonitorMode test cases reducing impact.
PNGJ: Bump to git sha1 a0b1101ba2d37de39428ed55c8189502e24a3125 of https://code.google.com/p/pngj Part 2/2 - Started w/ 51427b92a2d9cd3fc619854e26536c9c6adad947

Missed rejected patches ..