Re: [PATCH 5/5] Enable ref log creation in git checkout -b.

I've swallowed all 10 and pushed them out in "pu", but could you
add tests to check the Porcelainish commands you touched with
this series to make sure they all log correctly?

BTW, I noticed that a patch earlier in the series depended on
something not in "master" (it's rfc2822_date from js/fmt-patch
series).  Generally I do not want to make a branch hostage of
another branch by introducing a dependency, but for now I'll
pull in early part of js/fmt-patch branch into sp/reflog branch
and see what happens.

If sp/reflog branch graduates to the "master" first, it will
pull early parts of js/fmt-patch along with it, but the built-in
will be called "git fmt-patch" in the result, so it wouldn't
affect the use of "git format-patch".