[function.product] some updates, not tested yet
[la.container.eigen] let the user decide what he wants to do with a ptr
[la.solver.eigen] let bicgstab.ilut default to its defaults
instead of crashing
[la.container.affineparametric] updated to new layout
[la.solver] added default for solverDefaultSettings()
[grid] renamed createDefaultSettings() -> defaultSettings()