BGE PyAPI fixes

- CValue warning ShowDeprecationWarning("val = ob.attr", "val = ob['attr']"); had false positives because of python using getattr() internally. Only show the wanring now when a CValue is found.
- Py functions that accepted a vector and a GameObject were slowed down by PySequence_Check() first called on the GameObject, though this would fail it would try and get attributes from the game object - ending up in ~8 attribute lookups each time. Avoiding PySequence_Check() makes ob.getDistanceTo(otherOb) over twice as fast.

- Joystick hat events could crash the BGE for joysticks with more then 4 hats.
- PLY Import failed on PLY files from Carve, added some extra types.

source/gameengine/Expressions/PyObjectPlus.h

@@ -141,7 +141,7 @@ typedef struct {
 #define BGE_PROXY_PYOWNS(_self) (((PyObjectPlus_Proxy *)_self)->py_owns)
 
 /* Note, sometimes we dont care what BGE type this is as long as its a proxy */
-#define BGE_PROXY_CHECK_TYPE(_self) ((_self)->ob_type->tp_dealloc == py_base_dealloc)
+#define BGE_PROXY_CHECK_TYPE(_self) ((_self)->ob_type->tp_dealloc == PyObjectPlus::py_base_dealloc)
 
 
 								// This must be the first line of each