Bug fix (rerun feature): when using old configuration files: check if RERUN option exists and if does not exist set rerun to false.

- inclusion of common_ocean_post.txt in job script

additional call to ohc_specified_layer to compute map of 300-800m heat content on top of 0-300m one already included

Bug-fix for concatenation along lead-time of multi-member experiments + Update of NEMOVAR hard-coded period

Take advantage of autosubmit ability to rerun 4 times a sim job that would have failed for platform reasons : not deleting rcf which is already deleted; remove the restart directory that is going to be replaced

On our machines, in /cfu/software/ two versions of CDF tools are installed.
Oriol said that CFU has been using 2.1. 
After I added an export statement that redefines the PATH environmental variable,
it works fine now:

export PATH="$PATH:/cfu/software/cdftools2.1"

autosubmit_*.conf variables explanation added

on ithaca with UNKNOWN job status

compute the ocean heat content over various
basins/regions, layers, only in the mixed layer
depth, excluding the mixed layer depth ...
More information in the README

No commit message