- Removed map.cpp and map.h
- Created C_BBox::areBboxesAdjacent() function
  Tests if two bboxes are adjacent and returns the face the bboxes
  are touching
- Created C_BspNode::addNodeToPVS()
  Adds a node to node's PVS vector. Checks if it laready exists
- Modified C_BspNode::CleanUpPointSet() so you can choose whether
  to test sample points against node's bbox or node's geometry
- C_BspTree::CheckVisibility() and C_BspTree::RayIntersectsSomethingInTree()
  when the ray is interrupted by some geometry the said functions return
  the node in which this geometry belongs to
- Started implemending C_BspTree::closeLeafHoles()