Adds off mesh connection tool
upgrade functionality to allow setting the direction to be bi-directional
added immediate draw to duDebugDrawtorque so we can draw offmesh connections
DebugDraw for recast now caches the results
We now have a drawmode dropdown selector
drawmode changes come from the gui itself no longer from console values
all recast drawmodes are supported with the exception of drawmodes that add abilities like navqueries until the nav tester tool is imlpemented.
Added chunkytrimesh - this class splits up the geometry the navmesh is interested in into kdtree for fast traversal, makes the actual navmesh generation work with smaller chunks.
Now only 1 RecastPolylist per navmesh this can be saved out in a future commit.
This is a history commit, all functionality works same as it did before but it matches recasts recommended setup more closely. Future additions may break backwards compatibility.
