don't crash on bsp w/o vis
don't crash with origin in the void (includes inside of structural brush)(do reset)
grab point to analyse from camera position with nothing selected; grab from any objects selection too
fix rendering issues
read surfaces written by q3map2 correctly + faster rendering code
print number of loaded drawsurfaces to console for evaluation of optimization done
fix a couple of of leaks and crashes after new/delete
* fix crash with nonpthreads xmllib + multithreading + output to system console
* number of code fixes
Radiant:
misc...
* fix: clone group ent / map import / saving map as : group ents name labels at 0,0,0;
* number of code fixes
