ERT-747: Renamed ParserLog -> Logger
Finddune-grid.cmake: always enable the experimental grid extensions

this is now done by a config.h macro. The reason is that quite a bit
of code depends on boundary IDs which are only available as an
"experimental" grid extension in recent Dune releases...
Merge pull request #707 from andlaus/enable_experimental_grid_extensions

Finddune-grid.cmake: always enable the experimental grid extensions
Merge pull request #706 from joakim-hove/move-log

Renamed ParserLog -> OpmLog