Allow duplicate enum values. Fixes #2744

Thanks to hugo.lima@openbossa.org


[SVN r53660]

libs/python

@@ -1 +1 @@
-Subproject commit 6ffeca641c605617f4597c6a887cc85382519d30
+Subproject commit a4f028246a209d4534c4d034d941632ddcea832b