setup.py: add mesh.c to cmesh sources
setup.py: add mesh.c to cmesh sources

BubuLK/sfepy,sfepy/sfepy,RexFuzzle/sfepy,lokik/sfepy,BubuLK/sfepy,rc/sfepy,RexFuzzle/sfepy,RexFuzzle/sfepy,rc/sfepy,rc/sfepy,vlukes/sfepy,BubuLK/sfepy,sfepy/sfepy,vlukes/sfepy,RexFuzzle/sfepy,sfepy/sfepy,vlukes/sfepy,lokik/sfepy,lokik/sfepy,lokik/sfepy