[trivial] Memory debug helpers for next time
Patches applied:

 * stuart.bishop@canonical.com/launchpad--devel--2--patch-60
   Add some memory recipies from various sources to help debug leaks

 * stuart.bishop@canonical.com/launchpad--devel--2--patch-61
   Hack in some post-publishing memory debugging code

 * stuart.bishop@canonical.com/launchpad--devel--2--patch-62
   More mem debug stuff. Ref counts seems to be locking Z3 so try a different way

 * stuart.bishop@canonical.com/launchpad--devel--2--patch-63
   Better memory delta (?)

 * stuart.bishop@canonical.com/launchpad--devel--2--patch-64
   Merge from Rocketfuel

 * stuart.bishop@canonical.com/launchpad--devel--2--patch-65
   Switch off debug code