optimize one more draw call

git-svn-id: svn://svn.code.sf.net/p/vpinball/code/trunk@890 14438d79-0ffd-4333-8ae7-ea2bdd901387
Some comments and small fixes for 3D math.
Another fix to CMake file.
Merge branch 'fixes' into dev
Refactored check for habitrails into its own method.
Some comments and small fixes for 3D math.
Another fix to CMake file.
Refactored check for habitrails into its own method.
Merge branch 'fixes' of https://github.com/c-f-h/vpinball into fixes
CMake fixes.
Made choice of dynamically rendered elements not dependent on hardware acceleration for now.
Merge branch 'fixes' into dev

Conflicts:
	pin/player.cpp