Revert "moglcore/moalcore: Undo uchar.h include"

This reverts commit 1b7f6c1b4f82107c4dbb94025ded93a83a866d6f.

-> We don't care about old build systems anymore. Ubuntu 14.04-LTS
   and later is good enough.
Screen('Computer'): Report GStreamer base api version.

The .gstreamer field not only signals GStreamer support with a
value greater than zero, but the value itself encodes the rough
GStreamer version:

100   = 0.10.x
10000 = 1.x.y
Linux makefiles: Add pnet build support, switch Matlab to GStreamer-1.x backend.
Move old 32-Bit Matlab makefiles for Linux and Windows out of the way.

The Experiments/ subfolder is a calm and cozy retirement place
for these old fellows.
PsychKinectCore: Switch 64-Bit Matlab mex file for Linux to v0.5

-> Build against libfreenect-0.5
All mex files for 64-Bit Linux (Octave and Matlab) rebuilt.

-> Link all files against octave 3.8.x libs instead of ancient
   octave 3.2, 3.4 or 3.6, so stuff works out of the box on
   Ubuntu 14.04-LTS, Debian-7 etc.

-> Bump version numbers and dates to 3.0.12

-> Only outlier is Datapixx mex file, which still needs full
   rebuild for octave 3.8 compatibility and up to date functions.
   Last rebuild was February 2012 as of PTB 3.0.9 --> Ancient!