BGE: Removing OB prefix from object names - This will break scripts !!!! (also removi...

BGE: Removing OB prefix from object names - This will break scripts !!!! (also removing AC and ME :: internal changes only)

How it works now:
whenever you have to read/write object names you can do it without the prefix "OB". (it's not hard at all to fix scripts)

How it was before:
It was a mess :)
We had an inconsistent API where sometimes you had to input "OBname" and other "name" directly to assign object as data (usually in actuators).

Justification for the change:
Talking with Campbell we had since a while ago this feeling that this should be changed any time we were going to deprecate the API. So in order to deliver Blender 2.5beta0 with a more close-to-the-final API we decided that today was a good day to implement that.

Remaining issues:
1) VideoTexture uses IM or MA to identify the output material/texture. I haven't touched that, but it does look a bit off. (i.e. I didn't changed any MA, IM naming)
2) I didn't see the code of dynamic mesh. It may need to be edited as well.