Thrift: Python test improvements.

Summary:
- Add a serialization test for forwards/backwards compatibility.
- Hook the Python tests up to "make check".
- Miscellaneous changes to the Python tests.

Reviewed By: mcslee

Test Plan: Ran the test.


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665480 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/cleanup.sh b/cleanup.sh
index fe0d6ed..0f2cc70 100755
--- a/cleanup.sh
+++ b/cleanup.sh
@@ -35,4 +35,5 @@
 lib/cpp/Makefile.in \
 lib/py/Makefile.in \
 lib/csharp/Makefile.in \
-test/Makefile.in
+test/Makefile.in \
+test/py/Makefile.in