change argv to args in command handlers

change argv to args in command handlers

Subsequent patches expect all command handlers to use a uniform
parameter naming scheme.  In the entire tree, these two files used
standard 'argv' instead of our non-standard 'args'.  This patch opts
to reduces the noise required to unify the command handlers, using
dominant 'args' form.

A future patch may be used to convert us back to the standard argv, but
that requires coordination with all developers to minimize disruptions.