commands: allow debugobsolete to delete arbitrary obsmarkers
Sample usage is:
'$ hg debugobsolete --delete 0 5'
This is a debug feature that will help people working on evolution and
obsolescense.
#require test-repo
$ cd "$TESTDIR"/..
New errors are not allowed. Warnings are strongly discouraged.
$ hg files "set:(**.py or **.txt) - tests/**" | sed 's|\\|/|g' |
> python contrib/check-config.py