rtr_origin cleanup issues

[sraustein]

• Name is historical. Probably should be rpki_rtr at this point, particularly once we add BGPSEC support so it's not just doing origin anymore.
• Argument parsing is, um, funky. Clean up and use argparse? Note that argparse is flexible enough that we could have silent backwards compatibility with the entire current argument syntax, while still supporting (and showing help for) something saner. Might require minor refactoring, nothing serious.
• Like the other RP programs, rtr_origin doesn't use rpki.autoconf. Really ought to fix that, but will likely require reworking packaging into three packages (rp, ca, and libs, or something like that).

_Trac ticket #618 component rtrorigin priority minor, owner sra, created by sra on 2013-09-18T02:23:13Z, last modified 2013-09-18T02:25:30Z

[sraustein]

See argparse.SUPPRESS for how to silence specific help messages; see nargs argument to argparse.ArgumentParser for how to consume all the arguments we currently accept.

Trac comment by sra on 2013-09-18T02:25:30Z