clawpack/pyclaw — pull request #375 by ketch (2014-03-10 07:34:30+00:00)
Title: Don't fail if the Riemann solver is not in static.py

This resolves #374. Also, this provides better error messages when a solver is not valid. If we decide this is a good approach, the same thing could be done for the functions that check validity of controller, state, and solution.