LA: expose publicly whether a matrix/vector storage format is dense or not
LA: Refactoring towards the generic matrix/vector types, test simplification
LA: Refactor away the remaining usages of the non-generic base classes
LA: drop Common class (redundant since Builder)
LA: make IIterationStopCriterium generic & shared
LA: make IterationCountStopCriterium generic & shared
LA: make IIterator generic & shared
LA: make IIterativeSolver generic & shared
LA: make IIterativeSolverSetup generic & shared
LA: fix inline doc links to now-generic types
LA: fix portable build