Add decompyle's 2.1 tests

Update README.rst to note new pythons supported since last update

test/decompyle/test_functions.py

@@ -0,0 +1,58 @@
+# test_functions.py -- source test pattern for functions
+#
+# This source is part of the decompyle test suite.
+#
+# decompyle is a Python byte-code decompiler
+# See http://www.goebel-consult.de/decompyle/ for download and
+# for further information
+
+def x0():
+    pass
+
+def x1(arg1):
+    pass
+
+def x2(arg1,arg2):
+    pass
+
+def x3a(*args):
+    pass
+
+def x3b(**kwargs):
+    pass
+
+def x3c(*args, **kwargs):
+    pass
+
+def x4a(foo, bar=1, bla=2, *args):
+    pass
+
+def x4b(foo, bar=1, bla=2, **kwargs):
+    pass
+
+def x4c(foo, bar=1, bla=2, *args, **kwargs):
+    pass
+
+def func_with_tuple_args((a,b)):
+    print a
+    print b
+
+def func_with_tuple_args2((a,b), (c,d)):
+    print a
+    print c
+
+def func_with_tuple_args3((a,b), (c,d), *args):
+    print a
+    print c
+
+def func_with_tuple_args4((a,b), (c,d), **kwargs):
+    print a
+    print c
+
+def func_with_tuple_args5((a,b), (c,d), *args, **kwargs):
+    print a
+    print c
+
+def func_with_tuple_args6((a,b), (c,d)=(2,3), *args, **kwargs):
+    print a
+    print c