Python: use hash() as temporary workaround to check if two objects with different wrappers are underneath the same.

bindings/python/wscript

@@ -21,7 +21,7 @@ else:
     os.environ['PYTHONPATH'] = LOCAL_PYBINDGEN_PATH
 
 ## https://launchpad.net/pybindgen/
-REQUIRED_PYBINDGEN_VERSION = (0, 8, 0, 516)
+REQUIRED_PYBINDGEN_VERSION = (0, 9, 0, 526)
 REQUIRED_PYGCCXML_VERSION = (0, 9, 5)