Add regression test for future statements.  This adds eight files, but
seven are not tests in their own right; these files are mentioned in
regrtest.
diff --git a/Lib/test/test_future3.py b/Lib/test/test_future3.py
new file mode 100644
index 0000000..166628c
--- /dev/null
+++ b/Lib/test/test_future3.py
@@ -0,0 +1,10 @@
+"""This is a test"""
+from __future__ import nested_scopes
+from __future__ import rested_snopes
+
+def f(x):
+    def g(y):
+        return x + y
+    return g
+
+print f(2)(4)