Bugfix for #5846 erratic error with in "ob.getData(mesh=1)"

It looks like the changes for bug
  #5000 Changin EditMode in Script wrecks memory
break the python interpreter.

Since this is critical, I have #ifdef'ed those out of
BPY_interface.c and Window.c.  Did not touch Armature.c.
The ifdefs are tagged with /* bug 5000 */

This means bug #5000 is back in play.  Interesting to note
that according to #5846, only scripts run from the script menu
and not via Alt-P were broken.

source/blender/python/BPY_interface.c

@@ -525,11 +525,14 @@ int BPY_txt_do_python_Text( struct Text *text )
 
 	py_dict = CreateGlobalDictionary(  );
 
+#if 0
+/* bug 5000 */
 	//setup a weakref dictionary on __main__
 	maindict= PyModule_GetDict(PyImport_AddModule(	"__main__"));
 	if (PyDict_SetItemString(maindict, "armatures", PyList_New(0)) == -1){
 		return 0;
 	}
+#endif
 
 	script->py_globaldict = py_dict;