Fix test pattern to keep pypy happy.

Now py26, py27, py33, py34, and pypy tests work basically. With tox
and Python 3.x there is still a problem with preferred encodings and
opened files.

src/z3c/testsetup/functional/functionaldoctestsetup.txt

@@ -276,7 +276,7 @@ Note that the code uses self.regexs, which returns a cached compiled version
 of the regexs.
 
     >>> setup.regexs
-    [<_sre.SRE_Pattern object at ...>]
+    [<...SRE_Pattern object at ...>]
 
 If you need more complex checks here, you can derive your customized
 test setup class and overwrite ``isTestFile()``.