Move up using boost ptree directive.
Qualify const LisMatrix class attributes.
Comment LisMatrix class attributes 'is' and 'ie'.
Reset _is_assembled flag on modifications.
Correct lis vector row access in getMaxDiagCoeff().
Qualify const LisVector class attributes.
Merge pull request #4 from endJunction/add-Lis-matvec-solver

Add lis matvec solver