hg-cvs-import and new branch style

[Edouard Gomez]

Hello,

For personnal needs i'm moving a lot of CVS modules to Mercurial. After
some tries, i decided to use hg-cvs-import because it supports branches.

I enhanced the script a bit and plan to send a patch queue for upstream
merging.

But now i'm can't because the script doesn't work anymore since Matt
removed old style branch support. I'm now trying to update the branch
handling code.

I have a few questions about this new branch style:
 - why rawcommit doesn't expose extra param ?
 - the branchcache isn't updated when commiting, this has the side effect
   that the cache isn't coherent. At the moment i do
   repo.branchcache = None
   but it's nasty... is there a better way ?
 - when do i need to set the extra = {'branch': branchname}, at each
   commit or just when switching branches ? My experiments seems to prove
   that if i don't do at each commit, even if i invalidate the cache,
   branch tracking gets lost.

I'm able to provide patch for the rawcommit API if you want.

PS: i already have something working but i really want to clear things out
before sending patches for review.

-- 
Edouard Gomez