Simplest example is ```biom show-install-info```. Here's the optparse config file:

https://github.com/biom-format/biom-format/blob/master/biom/interfaces/optparse/config/show_install_info.py

Note that the results of the command are printed to stdout, and that there is no corresponding optparse option.

Thus, we need a way to transform the results of a command back into optparse/command-line space, without necessarily being tied to an optparse option: take a list of strings and print them. I think it's strange to have optparse results that have long names, short names, actions, and types, when there is never an optparse option to begin with.

Don't worry about backwards-compatibility at this point- this isn't at all what I'm concerned about.