Update devel/python/python/ert/__init__.py

Will not set ert_lib_path if directory does not exist.
Update devel/python/python/ert/__init__.py
Minor cleanup in libecl src tree
Fixed bug with dual porosity + lgr; seems it is not possible
Made sure that all LGRs inherit the dualp flag from the main grid
Merge branch 'master' of github.com:joakim-hove/ert
Merge branch 'master' into lgr-dualp-bug
Merge pull request #26 from joakim-hove/lgr-dualp-bug

Lgr dualp bug