Added bool flag to ert function ecl_grid_compare()
Added constructor based on existing ecl_grid_type pointer
Added new method EclipseState::getEclipsegridcopy()
Merge pull request #272 from joakim-hove/create-grid-copy

Create grid copy
fix some harmless compiler warnings

this comes with a minor API change as well, as the FaultCollection
class did not use the Cartesian size of the grid at all, so I decided
to remove the attributes and the arguments to the constructor...