use a more reliable way to find what are the new changesets on pull/unbundle The number of csets and the hooks where wrong (negative number of csets) when we unbundled a bundle which contains csets we already had. Remove unused variables.

#header#
# HG changeset patch
# User #author#
# Date #date|date#
# Node ID #node#
#parent%changesetparent#
#desc#

#diff#