Fix two snafus:

- Python 2.3 doesn't support the @decorator syntax
- Owner.py methods weren't protected

Also, python 2.3's doctest module doesn't have any unittest integration,
just remove the test_requestmethod.py glue.

PythonScript.py

@@ -350,7 +350,6 @@ def _validateProxy(self, roles=None):
       'manage_proxyForm', 'manage_proxy')
 
     manage_proxyForm = DTMLFile('www/pyScriptProxy', globals())
-    @postonly
     def manage_proxy(self, roles=(), REQUEST=None):
         "Change Proxy Roles"
         self._validateProxy(roles)
@@ -361,6 +360,7 @@ def manage_proxy(self, roles=(), REQUEST=None):
                     title  ='Success!',
                     message='Your changes have been saved',
                     action ='manage_main')
+    manage_proxy = postonly(manage_proxy)
 
     security.declareProtected('Change Python Scripts',
       'PUT', 'manage_FTPput', 'write',