Get rid of relative imports in all unittests.  Now anything that
imports e.g. test_support must do so using an absolute package name
such as "import test.test_support" or "from test import test_support".

This also updates the README in Lib/test, and gets rid of the
duplicate data dirctory in Lib/test/data (replaced by
Lib/email/test/data).

Now Tim and Jack can have at it. :)
diff --git a/Lib/test/test_fileinput.py b/Lib/test/test_fileinput.py
index fe90860..3a82c7c 100644
--- a/Lib/test/test_fileinput.py
+++ b/Lib/test/test_fileinput.py
@@ -3,7 +3,7 @@
 Nick Mathewson
 '''
 
-from test_support import verify, verbose, TESTFN
+from test.test_support import verify, verbose, TESTFN
 import sys, os, re
 from StringIO import StringIO
 from fileinput import FileInput