context: make sure file is not deleted while checking path conflicts
If a file is deleted and a directory of same name is created in the same commit,
IMM thinks of that as a file conflict, however the file is deleted and hence the
directory can be created.
The test change demonstrate the fix.
Differential Revision: https://phab.mercurial-scm.org/D4300
#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