test_rotor.py: New test of the rotor module.

test_*: converted to the new test harness.  GvR note!  test_signal.py
works interatively (i.e. when verbose=1) but does not work inside the
test harness.  It must be a timing issue, but I haven't figured it out
yet.
diff --git a/Lib/test/testall.py b/Lib/test/testall.py
index 5bb5f0c..e410e8f 100644
--- a/Lib/test/testall.py
+++ b/Lib/test/testall.py
@@ -33,6 +33,7 @@
 	 'test_imageop',
 	 'test_imgfile',
 	 'test_regex',
+	 'test_rotor',
 	 ]
 
 if __name__ == '__main__':