tests/test-issue619.out

mq: extend support for the --mq argument to extension commands

This allows commands like `purge' to accept the --mq option.

adding a
marked working directory as branch b
adding b
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
fast-forward
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
bogus fast-forward should fail
abort: merging with a working directory ancestor has no effect
done