Merge pull request #192 from kleinerm/master

Pull - I from kleinerm for PTB BETA RELEASE "Sex, Lies and Video" - Goto fail.

Final release of the 3.0.11 series:
* Eyelink bug fixes and improvements by SR-Research and mk.
* Screen('Textfont') allows atomic setting of font family and and font style.
* Fix Octave + PsychDataPixx compatibility for timestamping, cleanup VBLSyncTest.
* 10 bpc framebuffer support for AMD DCE-4+ gpu's, aka Radeon HD-5000 and later.
* 10 bpc / dithering fixes for AMD DCE-3 aka Radeon HD-4000 series.
* Workarounds for nouveau-kms bugs in Linux 3.13/3.14 for upcoming Ubuntu 14.04 LTS release.
* Workarounds for OSX 10.8 dual-display stereo graphics driver bugs and various 10.8/10.9 graphics bugs.
* Ability to disable crashy CVDisplayLink timestamping on OSX.
* OSXCompositorIdiocyTest to test for the latest hilarious OSX compositor bugs.
* PsychImaging - add convenience setup function for dual-display stereo mode 10 - mostly for OSX.
* PsychImaging - Improve 10 bpc framebuffer setup: Do not disable dithering on digital output by default, but leave decision to OS, with option to override.
* Screen('ConfigureDisplay', 'Dithering') allow low-level control of AMD dither control registers.
* Various help text updates.
* Various updates to color calibration/color handling routines by David Brainard.
* Misc other fixes.