Changes

See desc

* refactor chunk code to use new tesselator cube face generator
* glx vbos now reuse existing buffer storage if it is large enough
* glx can now use gl state color
* fix memory leak when loading map file
* remove all minimap array code
* refactor damaged voxel and falling blocks rendering to use tesselator 
(and use pointer access everywhere too)
* free kv6 file memory after load
* models can now freely choose team colors and are no longer baked into 
the model's data, they also use a tesselator
* the block's model now also uses glx (no more immediate drawing)
* reset team scores on a winning intel capture
* include git commit in client version
* refactor particle renderer to use tesselator (and pointer accesses)
* tesselator: add cube face generation, normal option and int/float mode
* generate block color selection texture on the stack
 (commit: a996f93)