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_pkgimport.py b/Lib/test/test_pkgimport.py
index 8c7a99b..523ba5a 100644
--- a/Lib/test/test_pkgimport.py
+++ b/Lib/test/test_pkgimport.py
@@ -1,6 +1,6 @@
 import os, sys, string, random, tempfile, unittest
 
-from test_support import run_unittest
+from test.test_support import run_unittest
 
 class TestImport(unittest.TestCase):