Fixed a few issues with the texture extraction

- The meshes returned by a MorphableModel now contain texture
coordinates
- Minor changes to render/3dmm/fitter
extractTexture now works without Qt
Moved clipToScreenSpace and screenToClipSpace to libRender
Moved fitting-stuff from libMorphableModels to libFitting

This should make the distinction clearer and remove inter-dependencies
between morphablemodel, render and fitting.

Removed a few more unnecessary OpenCV/hdf5 dependencies
- Fitter fully functional and working, outputs isomap and frontal re-rendering

- Added a few notes throughout the code
- Minor fix-ups to the Texture class and stuff
Fitter-app now works on whole directories/multiple files
Added a subproject facerecognitionTools, and a small app to generate probe/gallery lists from MultiPIE
- Some changes to the fitter and LandmarkFileGatherer.

- The Gatherer now  has a mode to recursively loop through directories
and collect all landmark files
- But in general, we need to find a much better way to collect landmarks
- added a fittingTools directory and a skeleton for a compareIsomaps app
Added a libFaceRecognition to contain utility-stuff for performing recognition experiments
Changes to face recognition stuff

- added a compareIsomaps app
- added a generateMultipieSigset app
- minor other changes to the experiments
Merge branch 'facerecognition' into fitting
Added examples for the face-recognition experiment structure

A sigset list (probe/galleries), and a matching.txt config. They will
generate a matchlist.
Added a tool to generate a matchlist
Implemented readSigset
Changes to FaceRecord, implemented generateMultipieSigset-app
Some changes to the names in the face-rec configs/lists
Finished generateMatchlist
Added/changed facerec-stuff

- Added a enroll and match example app
- Changed a lot of stuff in frDbExp, frDbTool and frRunCogExp to match
the new structures in libFaceRecognition
- added a transformDataPath function and respective class
Simplified MeshUtils::extractTexture a bit
Put the calculation of a triangle's boundingbox in a separate function