tests: new test for mq qdiff command
`hg qdiff .' is supposed to work but it is currently broken.
This test should help us verify when it gets fixed.
#!/bin/sh
HGRCPATH=$HGTMP/.hgrc; export HGRCPATH
echo "[extensions]" >> $HGTMP/.hgrc
echo "mq=" >> $HGTMP/.hgrc
hg init a
cd a
hg qnew first.patch
hg qnew first.patch
touch ../first.patch
hg qimport ../first.patch
exit 0