Revert setting of use_ARCTIC variable (NorESMhub#425)

Apply patch of latest commit in master for the dustflux output PR Nor…

…ESMhub#420 (NorESMhub#423)

Introduction of dustflux output and of a xml-switch HAMOCC_SINKING_SCHEME with options WLIN, AGG, M4AGO and CONST, default is WLIN, to select a sinking scheme in iHAMOCC.

Merge pull request NorESMhub#409 from blcc/release-1.4

When NINST_OCN > 1, should be NTASKS_PER_INST_OCN

Merge pull request NorESMhub#408 from mvertens/feature/glc_runoff_fro…

…m_cmeps

Add glc runoff to blom from cmeps

Merge pull request NorESMhub#407 from mvertens/feature/use_only_submo…

…dules

use only submodules for noresm checkout

Merge pull request NorESMhub#403 from mvertens/feature/update_dms_exc…

…hange

update dms exchange and simplify file opens

fix initiation of sedfluxb (NorESMhub#402)

Change M4AGO tag to dev-1.0.1 (NorESMhub#392)

release-1.6 : Restructure testdefs for blom and hamocc (NorESMhub#386)

numerous improvements for hybrid coordinate