Port program enkf_chgres_recenter_nc to acorn

 On branch release/gefs_v12_github_port2acorn
	new file:   modulefiles/fv3gfs/enkf_chgres_recenter_nc.acorn
	modified:   sorc/machine-setup.sh

Refs: NOAA-EMC#345

modulefiles/fv3gfs/enkf_chgres_recenter_nc.acorn

@@ -0,0 +1,20 @@
+#%Module#####################################################
+## enkf_chgres_recenter component - wcoss2/acorn
+#############################################################
+
+module load intel/19.1.3.304 PrgEnv-intel
+
+module load intel/19.1.3.304/cray-mpich/8.1.2 
+
+module load bacio/2.4.1
+module load w3nco/2.4.1
+module load ip/3.3.3
+module load sp/2.3.3
+module load cmake/3.18.4
+
+module load hdf5-parallel/1.10.6
+module load netcdf-hdf5parallel/4.7.4
+
+module load curl/7.72.0
+
+export FC=ftn

sorc/machine-setup.sh

@@ -189,6 +189,22 @@ export NCEPLIBS=/mnt/lfs3/projects/hfv3gfs/gwv/NCEPLIBS.15X
 export WRFPATH=$NCEPLIBS/wrf.shared.new/v1.1.1/src
 export myFC=mpiifort
 
+##---------------------------------------------------------------------------
+elif [[ -d /apps/prod ]]; then
+
+	# We are on WCOSS2/Acorn
+    target=acorn
+
+    module purge
+    source /apps/prod/lmodules/startLmod
+    #module use -a /apps/prod/modules
+    # For gefs_nemsio2nc
+    #module use /lfs/h1/ops/prod/libs/modulefiles/stack
+    #module load hpc
+    #module load hpc-intel
+    #module load hpc-cray-mpich
+    module load envvar/1.0
+
 else
     echo WARNING: UNKNOWN PLATFORM 1>&2
 fi