record: extract a closure to the module level This clean up is almost as gratuituous as this closure was.

record: drop a now useless overlay that grab the lock Since 28dfb2df4ab9, commit grab the wlock and the extra layer grabing the lock in record is no longer needed. We clean up the code to make this simpler (and add a small assert for extra security against future change).

bundlerepo: fix string interpolation Matt Harbison is saying we cannot `%s` a type into a byte string and that seems reasonable.

bundlerepo: apply phase data stored in the bundle instead of assuming `draft` The phase information contained in the changegroup part and the explicit `phase-heads` part are now taken in account. Initial changes and test by Matt Harbison, code rework by Pierre-Yves David.

bundlerepo: handle changegroup induced phase movement in the associated method These movement comes from handling the changegroup part, so we keeps the code grouped. This will be important when handling more part (and more changegroup part in the future) This induce a small code duplication, but it does not looks terrible.

bundlerepo: move most attribute declaration earlier in __init__ The expected attribute are clearer this way. The bundle handling code is responsible for setting most of it.