Make it static and then use it both for argp_parse as well as
cmd_register_argp.
Split commands into five groups, to help understanding of their
usefulness.
Mention that each command has its own help text, and that we are being
fancy to keep the user from having to give fs path.
Signed-off-by: Andy Grover <agrover@versity.com>
The error return conventions were confused, resulting in main exiting
with success when command execution failed.
Signed-off-by: Zach Brown <zab@versity.com>
