* Removed Samples button and dialogue.
* Removed SoloMesh.
* Removed TempObstacles.
* Limit 'Verts Per Poly' to 6 (DT_VERTS_PER_POLYGON).
* Moved hulldef constant and handler to TileMesh.
* Set m_tileSize based on hull (small = 32, med_short = 32, medium = 32, large = 64, extra_large = 64).
* Set reachability table count to 1.
* Don't divide reachability write size by 4.
* Trim off all unused bytes after building reachability table.
* Default cvar 'navmesh_always_reachable' to 0.
AI behavior seems to have improved a bit, they attempt to pathfind better, and if they find a certain route they attempt another route where originally they would become stuck in such situation.
If you build the SDK after this commit, you need to rebuild all navmeshes, else the game would segfault in dtNavMesh::isPolyReachable().
