[PATCH 0/5] rbd: cleanups related to argument parsing

[Alex Elder <elder@dreamhost.com>]

This series affects the way arguments are parsed in rbd_add().
It first encapsulates the code into its own helper function.
Then it uses a few simple tokenization functions instead of
sscanf() to parse the string provided, which makes it possible
to do a better job of error checking the input.  It makes use
of the ability to check for certain invariants at build time
rather than runtime.  And by reworking what information gets
passed around, eliminates the need to allocate a buffer to
hold the monitor addresses.

					-Alex