remotefilelog: move most functions in onetimeclientsetup() to top level
This is how most extensions seem to do it. It makes sure we don't
accidentally depend on the captured ui instance.
Differential Revision: https://phab.mercurial-scm.org/D6333
#require serve
$ hg clone http://localhost:$HGPORT/ copy
abort: * (glob)
[255]
$ test -d copy
[1]
$ "$PYTHON" "$TESTDIR/dumbhttp.py" -p $HGPORT --pid dumb.pid
$ cat dumb.pid >> $DAEMON_PIDS
$ hg clone http://localhost:$HGPORT/foo copy2
abort: HTTP Error 404: * (glob)
[255]
$ killdaemons.py