Added a caped player model

Which works like the hat layer, when the area for the cape (a 8x12 set of pixels) which is to
the right of the arm texture, is given a non-alpha or semi-alpha pixel,
it will display ingame, similar to the hat layer on the player's head.

An example for this is this:
http://i.imgur.com/rVsZcTP.png

and these are the ingame result:
No Cape:
http://i.imgur.com/nPR4Ju7.png
Cape:
http://i.imgur.com/1feBz1Z.png

[PilzAdam] why dont you include sam II in there?
Sam II is included in this branch, closing of the Sam II pull as it is included in this pull.