suzerain: #3040 permit radialflow in perfect_init

Attempts to add a small amount of user-friendliness
by way of DEBUG/INFO/WARN.

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@43548 0bd85f0b-c151-43b9-a1e9-27231104551f