Reverted ecl_file_push/pop() scoping when loading LGRs. ERT-130
Removed grid_nr == GRIDHEAD[4] test from lgr loader
Merge pull request #77 from joakim-hove/lgr-troll-bug

This PR removes assumption that GRIDHEAD[4] == Running lgr number.
Merged lgr count issue from master ERT-130
well_state_load() works with Troll case MSW and MSW_LGR.  ERT-130