Add tox support to PyStemmer

pystemmer_add_tox_support.patch

Index: tox.ini
===================================================================
--- tox.ini    (revision 0)
+++ tox.ini	(revision 0)
@@ -0,0 +1,6 @@
+[tox]
+envlist = py26, py27, py33, pypy
+
+[testenv]
+commands =
+    {envpython} runtests.py -v
Index: runtests.py
===================================================================
--- runtests.py	(revision 560)
+++ runtests.py	(working copy)
@@ -5,6 +5,8 @@
 py3k = sys.version_info >= (3, 0)
 
 if py3k:
-    doctest.testfile('docs/quickstart_python3.txt')
+    num_failures, num_tests = doctest.testfile('docs/quickstart_python3.txt')
 else:
-    doctest.testfile('docs/quickstart.txt')
+    num_failures, num_tests = doctest.testfile('docs/quickstart.txt')
+
+sys.exit(num_failures)

Mentioned in message on mailing list: http://article.gmane.org/gmane.comp.search.snowball/1399