Fix some issues I created

Two of these tests pass in release mode but not in debug (one is a timeout, the other is an assertion)
Two of them are failing in both and I don't know why I marked them as succeeding.

from_cpython/Lib/test/test_difflib.py

+# expected: fail
 import difflib
 from test.test_support import run_unittest, findfile
 import unittest

from_cpython/Lib/test/test_itertools.py

+# expected: fail
 import unittest
 from test import test_support
 from itertools import *

from_cpython/Lib/test/test_richcmp.py

+# expected: fail
 # Tests for rich comparisons
 
 import unittest

test/CPYTHON_TEST_NOTES.md

@@ -62,6 +62,7 @@ test_descrtut           `exec in DefaultDict()`
 test_descr              wontfix: crashes at "self.__dict__ = self"
 test_dict               misc failures related to things like gc, abc, comparisons, detecting mutations during iterations
 test_dictviews          segfault calling repr on recursive dictview. remove test/tests/test_dictview.py when the orig test passes
+test_difflib            wrong diff output?
 test_distutils          Doesn't like our .pyston.so extension; we need to copy in wininst-6.0.exe and similar
 test_dis                dis not really supported in Pyston
 test_dl                 No module named dl
@@ -123,6 +124,7 @@ test_pydoc              Not sure, not generating the right docstrings
 test_random             long("invalid number")
 test_repr               complex.__hash__; some unknown issues
 test_resource           fails on travis-ci: setrlimit RLIMIT_CPU not allowed to raise maximum limit
+test_richcmp            Assertion `ovarargs->cls == tuple_cls' failed
 test_runpy              recursion-depth sisues on debug, 'imp has no attribute "get_magic"'
 test_scope              eval of code object from existing function (not currently supported)
 test_scriptpackages     No module named aetools

test/cpython/test_lib2to3.py

-../../from_cpython/Lib/test/test_lib2to3.py
\ No newline at end of file

test/cpython/test_lib2to3_1.py

+# Skipping test_parser and test_all_fixers
+# because of running
+from lib2to3.tests import (test_fixers, test_pytree, test_util, test_refactor,
+                           test_parser, test_main as test_main_)
+import unittest
+from test.test_support import run_unittest
+
+def suite():
+    tests = unittest.TestSuite()
+    loader = unittest.TestLoader()
+    for m in (test_fixers, test_pytree, test_util):
+        tests.addTests(loader.loadTestsFromModule(m))
+    return tests
+
+def test_main():
+    run_unittest(suite())
+
+
+if __name__ == '__main__':
+    test_main()

test/cpython/test_lib2to3_2.py

+# Skipping test_parser and test_all_fixers
+# because of running
+from lib2to3.tests import (test_fixers, test_pytree, test_util, test_refactor,
+                           test_parser, test_main as test_main_)
+import unittest
+from test.test_support import run_unittest
+
+def suite():
+    tests = unittest.TestSuite()
+    loader = unittest.TestLoader()
+    for m in (test_refactor, test_parser, test_main_):
+        tests.addTests(loader.loadTestsFromModule(m))
+    return tests
+
+def test_main():
+    run_unittest(suite())
+
+
+if __name__ == '__main__':
+    test_main()