2.5 - Compiling 'hacks' for py

* Unicode calls in bpy_idprop.c were causing linking errors here. Probably Py-libs for windows would need recompiling with unicode before we can enable this. For now, commented out the offending calls.

source/blender/python/BPY_extern.h

@@ -49,6 +49,7 @@ struct bConstraintOb; /* DNA_constraint_types.h */
 struct bConstraintTarget; /* DNA_constraint_types.h*/
 struct Script;				/* DNA_screen_types.h */
 struct BPyMenu;
+struct bContext;
 #ifdef __cplusplus
 extern "C" {
 #endif