- Finish fix for return values in PythonPolicy

- Put mutex and global _ret_val variable into 
ScriptAdapter instead of the global space, space which is
anyway not accessible after decref'ing the corresponding 
python module


git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@527 3ecf2c5c-341e-0410-92b4-d18e462d057c

src/backend/pyloader/ScriptAdapter.py

@@ -79,7 +79,7 @@ class ScriptAdapter :
     #
     # @param self The caller object
     def async_is_preemptive(self):
-        _g_mutex.lock(ScriptAdapter._wrap_is_preemptive, self)
+        self._g_mutex.lock(ScriptAdapter._wrap_is_preemptive, self)
 
     def _wrap_is_preemptive(self):
         thread.start_new_thread(ScriptAdapter._wrap_is_preemptive_callback, (self,))
@@ -105,5 +105,5 @@ class ScriptAdapter :
     def get_return_value(self):
         return self._ret_val
 
-    def test_lock(self):
+    def mutex_test_lock(self):
         return self._g_mutex.test()