allow Mesh instance in place of filename in PDESolverApp.setup_output_info()
allow Mesh instance in place of filename in PDESolverApp.setup_output_info()

rc/sfepy,sfepy/sfepy,sfepy/sfepy,rc/sfepy,BubuLK/sfepy,BubuLK/sfepy,BubuLK/sfepy,sfepy/sfepy,rc/sfepy