ERT-437: Added LOG_FILE as key for the rml module.
ERT-437: Added boolean flag CLEAR_LOG.
ERT-437: Added option to recalculate lambda for every iteration.
Merge pull request #408 from joakim-hove/ERT-437-unify-rml

Ert 437 unify rml
Set CMakeLists.txt version to 1.5.x