DO NOT IGNORE THE DIFFICULTY METER!
added some notes to what should be fixed
actual difficulty is now displayed properly in difficulty selection
screen
3d object no loads, isn' t drawn YET
arrow is now rendered (badly this is just a POC< needs further
adjustment)
regular arrows are now replaced with 3d objects fucked up holds (but
they need to be replaced too so doesn´t matter at this point)
todo: transforms etc

result:
http://img600.imageshack.us/img600/7493/n4jo.png
added some comments
arrow-outline is in place, but still no rotation :-(
Merge branch 'master' into danceoverhaul

Conflicts:
	game/screen_playlist.cc
	game/screen_playlist.hh
Fix mismerge.
Merge branch 'master' into danceoverhaul
arrow now renders correctly, performous hates solid objects
Merge branch 'danceoverhaul' of https://github.com/performous/performous into danceoverhaul
Use glmath normalization in .obj loader.
Arrow rotations.

Also make model files face right (+x) so rotations are intuitive.
Fix 3d object texturing.
added speedmod var (no menu option YET) and futuremax DDR-pad config
have the arrows a little closer to each other
added animation to arrow-outlines when pressing the corrosponding arrow
refactored speedmod variable