* Cutting the branch should be automatic. Jenkins could do this easily
and make the timing predictable for all parties.

* It seems like the php-1.XwmfY checkouts on tin could be either
shallow or single branch checkouts. I think Chad started playing with
having multiple working copies that share the same repository which
might be even nicer.

* Speaking of Chad's prototype work, /a/common/php-git makes
`updateWikiversions` throw a warning: "updateBitsBranchPointers: link
target /usr/local/apache/common-local/php-git/skins does not exist."

* I tried to make a script to automate copying security patches from
one branch checkout to the next. It worked sort of. `git apply` wasn't
smart enough to figure out that the patches I pulled off of the wmf15
checkout were already applied in the wmf16 branch. It would be nice to
figure this out and get it automated or find a better way in general
to manage security patches.

* My ssh-agent (OS X 10.8.5) croaked badly when trying to run
sync-wikiversions. This seems to be triggered by the full fanout (not
batched) dsh call. Aaron had to step in and run both sync-wikiversions
for me.

Things actually went pretty smoothly though. Thanks a lot to Chad and
Sam for helping me make a checklist and Aaron for being around to lend
a hand when I fell and couldn't get up.