suzerain: add 'plot_all' option for stats plots

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@44582 0bd85f0b-c151-43b9-a1e9-27231104551f
suzerain: add obtain_operator_tools()

Codifies a commonly-occuring pattern within apps/perfect/driver.cpp

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@44584 0bd85f0b-c151-43b9-a1e9-27231104551f
suzerain: #3012 correct default helm handling

This was breaking restart repeatability prior to this commit.

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@44585 0bd85f0b-c151-43b9-a1e9-27231104551f