add full read and write support for comsol mesh format for sfepy supported types
add full read and write support for comsol mesh format for sfepy supported types

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