Bug: update MatrixHandler::addConst return type to int#402

pelesh merged 2 commits intoORNL:maanas_arora/add_const_return_typeORNL/ReSolve:maanas_arora/add_const_return_typefrom

MaanasArora:maanas_arora/add_const_return_typeMaanasArora/ReSolve:maanas_arora/add_const_return_typeCopy head branch name to clipboard