test-convert-cvs: force cvs -f options to avoid cvsrc
There are some reference to a CVS_OPTIONS environment variable doing that but
it does not work on my system (cvs 1.11.20, macosx).
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.