suzerain: #2503 accept nozzle options on CLI

Also includes save/load from restart files.  Remains
to plug this into the baseflow computations.

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@42580 0bd85f0b-c151-43b9-a1e9-27231104551f