test-copies: introduce merge chains test for the P/Q merges
This is similar to the chaining test we have for the A/E merges.
The current result of this tests is wrong, as for the other test of the same
familly. This will be fixed by a later changesets.
Differential Revision: https://phab.mercurial-scm.org/D10059
#require serve
$ hg clone http://localhost:$HGPORT/ copy
abort: * (glob)
[100]
$ 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)
[100]
$ killdaemons.py