better test for cli install

Reduced to just cli_status, cli_install, and cli_uninstall.  cli_status gives better errors, compares link to verify it's ours, and remove no longer supports force.  Should also no longer spew in xcode dev console.

I think I prefer that any removal has to be done manually -- reduces the likelihood that we break something else if hs does end up being a command line tool for something else.