tests/test-rebase-mq-skip

tests: fix bashism to load helpers.sh

`source` isn't available at POSIX sh.

#!/bin/sh
# This emulates the effects of an hg pull --rebase in which the remote repo 
# already has one local mq patch

. $TESTDIR/helpers.sh

echo "[extensions]" >> $HGRCPATH
echo "graphlog=" >> $HGRCPATH
echo "rebase=" >> $HGRCPATH
echo "mq=" >> $HGRCPATH

hg init a
cd a
hg qinit -c # This must work even with a managed mq queue

echo 'c1' > c1
hg add c1
hg commit -d '0 0' -m "C1"

echo 'r1' > r1
hg add r1
hg commit -d '1 0' -m "R1"

hg up 0
hg qnew p0.patch
echo 'p0' > p0
hg add p0
hg qref -m 'P0'

hg qnew p1.patch
echo 'p1' > p1
hg add p1
hg qref -m 'P1'
hg export qtip > p1.patch 

echo
echo '% "Mainstream" import p1.patch'
hg up -C 1
hg import p1.patch
rm p1.patch

echo
echo '% Rebase'
hg up -C qtip
hg rebase | hidebackup
hg glog  --template '{rev} {desc} tags: {tags}\n'