Fixed triangle-rigidbody that was mapped accidentally to convexTriangleMesh. 

For now it maps to btBvhTriangleMeshShape, that should usually only used for static/non-moving meshes. Nevertheless it seems to work but in future we should use btGImpactMeshShape or such. No time to have a deeper look atm...

git-svn-id: http://gamekit.googlecode.com/svn/trunk@1306 c957766c-2088-11de-b650-e715bd6d7cf1
physics: rigidbody triangle-meshes are handled as gimpactshape. triangle2triangle collisions should be avoided if possible since the results can be very wired.

git-svn-id: http://gamekit.googlecode.com/svn/trunk@1307 c957766c-2088-11de-b650-e715bd6d7cf1
Merge remote-tracking branch 'git-svn'