option to build the BGE without python, uses existing python check (cmake and scons)

when python is disabled videotextures are not built.

source/gameengine/GameLogic/SCA_XORController.cpp

@@ -95,7 +95,7 @@ CValue* SCA_XORController::GetReplica()
 	return replica;
 }
 
-
+#ifndef DISABLE_PYTHON
 
 /* ------------------------------------------------------------------------- */
 /* Python functions                                                          */
@@ -131,5 +131,6 @@ PyMethodDef SCA_XORController::Methods[] = {
 PyAttributeDef SCA_XORController::Attributes[] = {
 	{ NULL }	//Sentinel
 };
+#endif // DISABLE_PYTHON
 
 /* eof */