suzerain: improve utility of script

From having worked awhile with this script, this
form is more useful.


git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@45245 0bd85f0b-c151-43b9-a1e9-27231104551f
Add gridpoints

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@45246 0bd85f0b-c151-43b9-a1e9-27231104551f
suzerain: add relam.bl helper

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@45247 0bd85f0b-c151-43b9-a1e9-27231104551f
suzerain: rework descriptions

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@45248 0bd85f0b-c151-43b9-a1e9-27231104551f
suzerain: add shape factor

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@45249 0bd85f0b-c151-43b9-a1e9-27231104551f