cmd: accept relative path args.
cmd: accept relative path args.

Internally there's a strict focus on absolute paths, but the CLI should be happy to Do What I Mean.  If done, resolution of absolute paths is of course right at the top.

Signed-off-by: Eric Myhre <2346ad27d7568ba9896f1b7da6b5991251debdf2@exultant.us>

polydawn/rio,polydawn/rio