* Removed some unused vars
* Fixed some signed/unsigned comparison mismatch warnings
* Cast some int's to size_t when appropriate
* Removed some redundant casts
* silenced warnings about implicit conversions that lose precision
* changed origMousePos to an array of ints to match mousePos
- added rcFixupAdjacentContours which adjust adjacent contour sets so that that they share all vertices (still buggy!)
- changed the demo stucture to handle tiled navmesh generation process (still ugly)
- the performance results are put into a struct instead of logged immediatelly
- added ChunkyTriMesh class which allows to partiotion a trimesh to smaller pieces using AABB tree
