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.
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
merge: warning: conflicts during merge
merging a
merging a failed!
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
There are unresolved merges, you can redo the full merge using:
hg update -C 2
hg merge 1
e7fe8eb3e180+0d24b7662d3e+ tip
something else
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something
M a