Merge pull request #112 from kleinerm/master

PTB BETA RELEASE "Rainbows, Droids & Compute Hippies!" SP1

* Fix PRxxx support on Linux.
* Fix missing 64-Bit Radeoncontrol exe on Linux.
Merge pull request #114 from kleinerm/master

Pull new DrawFormattedText() improvement.
Merge pull request #116 from kleinerm/master

Merge post-install fix for Jave setup from zacklb.
Merge pull request #24 from Psychtoolbox-3/master

PTB BETA RELEASE "Rainbows, Droids & Compute Hippies!" SP3

* Make java path setup in postinstall routine more robust against users doing weird things.