backout
e7167007c083
This may have allowed unbounded I/O sizes with the current chunk
retrieval code.
revert: use term "uncommitted merge" in help text
to make sure users can't possibly be mislead to try this for canceling a
*merge changeset*.
hgweb: show help with verbose sections included
This makes sure we see the same help info as with 'hg help <command> --verbose'
on the command line, that is, with verbose sections included.