Profiler: Fix the rendering and use finer grain.
SSAO: Use a single texture fetch for random.
STKMesh: Start support for transparent object.

Highly experimental, only applies on the blob shadow under karts.
STKMesh: Use forward rendering for transparent

Transparent objects may be double sided (like bubble),
it doesn't make sense to use a deferred renderer.
Moved verbose option to be done even if a file is downloaded.
Fixed crash in first-time-start of STK when glsl reported to
be available, but doesn't work.
Merge branch 'master' of github.com:supertuxkart/stk-code
Fixed linux compilation.
Support running stk from the cmake bin directory.
Enabled at least VERIFYPEER.
Removed old login dialog. Fixed tabs in login screen that
were not properly focused.
STKMesh: Some simplifications.
STKMesh: Add support for Displacing
STKMesh:Displace support
Hack to make displacing object non animated and thus STKMeshes.
GPUParticles: Factorize shader loading in shader.h/cpp
SSAO is stronger now
GPUParticles: Use VAO
Merge branch 'master' of https://github.com/supertuxkart/stk-code
STKMesh, GPUParticles: Some factorization.