backout: reverse changeset belongs on current branch
Backing out a changeset that is before a named branch branchpoint was
making the reverse changeset the tip of the old branch, which is wrong
and very confusing. So instead, we put it on the current named branch.
Basic install:
$ make # see install targets
$ make install # do a system-wide install
$ hg debuginstall # sanity-check setup
$ hg # see help
See http://www.selenic.com/mercurial/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.