prune: use action "prune", not "touch", in precheck
We have been using "touch" since 06ee4ec88190 (prune: use precheck to
validate revision, 2017-07-23). That commit modified the tests, so it
kind seemed intentional, but I suspect it was still just an oversight.
# utility to setup pythonpath to point into the tested repository
export SRCDIR="`dirname $TESTDIR`"
if [ -n "$PYTHONPATH" ]; then
export HGTEST_ORIG_PYTHONPATH=$PYTHONPATH
if uname -o | grep -q Msys; then
export PYTHONPATH="$SRCDIR;$PYTHONPATH"
else
export PYTHONPATH=$SRCDIR:$PYTHONPATH
fi
else
export PYTHONPATH=$SRCDIR
fi