phabricator: pass ui into readurltoken instead of passing repo
The goal of this series is to make `hg debugcallconduit` work outside of a hg
repo.
This patch, removes requirement of repo object from readurltoken as we only need
ui there. It also updates the callers to pass in ui instead of repo.
Differential Revision: https://phab.mercurial-scm.org/D6497
Issue351: mq: qrefresh can create extra revlog entry
$ echo "[extensions]" >> $HGRCPATH
$ echo "mq=" >> $HGRCPATH
$ hg init
$ hg qinit
$ echo b > b
$ hg ci -A -m foo
adding b
$ echo cc > b
$ hg qnew -f foo.diff
$ echo b > b
$ hg qrefresh
$ hg debugindex b
rev linkrev nodeid p1 p2
0 0 1e88685f5dde 000000000000 000000000000