GFS v16 NCO standards updates

Updates so GFS v16 will conform with the latest NCO standards:

Remove '.ecf' extension from the 'emcsfc_global_sfc_prep.sh' script.

Update 'link_fixdirs.sh' to open permissions on fixed directories
before removing them.

For details, see issue #138.

fix/link_fixdirs.sh

@@ -46,8 +46,12 @@ elif [ $machine = "jet" ]; then
 elif [ $machine = "orion" ]; then
     FIX_DIR="/work/noaa/global/glopara/fix"
 fi
+
 for dir in fix_am fix_fv3 fix_orog fix_fv3_gmted2010 fix_sfc_climo; do
-    [[ -d $dir ]] && rm -rf $dir
+    if [ -d $dir ]; then
+      [[ $RUN_ENVIR = nco ]] && chmod -R 755 $dir
+      rm -rf $dir
+    fi
     $LINK $FIX_DIR/$dir  .
 done
 

scripts/exemcsfc_global_sfc_prep.sh.ecf → scripts/exemcsfc_global_sfc_prep.sh

@@ -2,7 +2,7 @@
 
 ####  UNIX Script Documentation Block ###################################
 #                      .                                             .
-# Script name:  exemcsfc_global_sfc_prep.sh.ecf
+# Script name:  exemcsfc_global_sfc_prep.sh
 # RFC Contact:  George Gayno
 # Abstract:  This script calls two utility scripts to prepare a global 
 #    blended ice analysis and global snow analyses for use by GFS/GDAS.
@@ -16,6 +16,8 @@
 #    12/2014  Gayno   Set file defaults to grib 2 versions
 #                     when available.
 #    08/2015  Gayno   Update to current NCO standards
+#    08/2020  Gayno   Rename without the '.ecf' extention per
+#                     latest NCO standards.
 #
 # Usage:
 #  Parameters:    < no arguments >