changegroup: add first logic to send file header
This will allow us to later change how we filter needed file nodes
bookmarks: do not forward merged bookmark (
issue1877)
pull: new output message when there are multiple branches
Pull outputs a slightly new message when there are multiple branches and
the current branch has many heads:
(run 'hg heads .' to see heads, 'hg merge' to merge)
This message adds the "." in hg heads to encourage you to consider only the
current branch's heads.