Change aux file read error message to debug level.
Merge pull request #422 from ketch/aux_file_message

Change aux file read error message to debug level.
added tfluct solver to sharpclaw/flux1.f90
added tfluct1 to sharpclaw/solver.py - SharpClawSolver1D
added tfluct object to solver superclass
corrected api and output arguments for dummy tfluct subroutine
corrected flux1.f90 api for tfluct
added tfluct dummy instead of None type for tfluct1 when tfluct_solver=False
working with euler 1d example
ädded _cparams to solver for tfluct
homogeneized tfluct solver and renamed to euler_tfluct, updated setup and other configration files for euler_1d
added support for 2d and 3d
minor corrections to dummy tfluct and fixed consistency typos for sharpclaw solver
using ours