[Dune] Comments on Dune Developer Meeting 2014

[Robert Kloefkorn]

Hi Martin,

if it is important for some people to have grid iterators to look like
STL forward_iterator (without any good reason) then lets do it.

I will add a configure/cmake option called hardened-dune (or SEDune)
that disables these two methods so that people can at least check their
code for simple things to be avoided in production codes.

Best,

Rob

PS: Your simple fix with the helper struct EntityPointer won't work.
Life ain't that easy ;-)