Clarify a TODO, and test tweaked commit-email.pl script.

svn:r6902

doc/TODO

@@ -65,6 +65,10 @@ N   . Improve memory usage on tight-memory machines.
             them too.
         - Be a little more OO to save memory in frequently
           replicated structs.
+          o Split circuit_t into origin circuits and or circuits
+            - Move as many fields as reasonable out of base class.
+            - Re-pack structs to avoid wasted bytes.
+          - Split connection_t based on type field.
 
     - "bandwidth classes", for incoming vs initiated-here conns.
     o Asynchronous DNS