Reduce debug level in generated namcouple file.

OASIS is more silent in release (production) configuration.
However, if we build in debug mode, we still get exchanged variables as nc files.

src/flux_calculator_create_namcouple.F90

@@ -27,7 +27,11 @@ MODULE flux_calculator_create_namcouple
 
         WRITE(w_namcouple,*) '############################################'
         WRITE(w_namcouple,*) ' $NLOGPRT'
+#ifdef IOW_ESM_DEBUG
         WRITE(w_namcouple,*) '1 1'
+#else
+        WRITE(w_namcouple,*) '0 1'  !TODO: eventually set the second 1 to 0 (= timings are calculated)
+#endif
         WRITE(w_namcouple,*) ' $END'
         WRITE(w_namcouple,*) '############################################'
         WRITE(w_namcouple,*) ' $STRINGS'
@@ -95,9 +99,15 @@ MODULE flux_calculator_create_namcouple
 
         ! write entry
         IF (my_io == 'R') THEN
-            WRITE(w_namcouple,*) counterpart, ' ', io_field%name, ' 1 ', timestep, ' 2 restart_flc_'//TRIM(io_field%name(3:6))//'_'//TRIM(my_model_name)//'.nc EXPOUT'
+#ifdef IOW_ESM_DEBUG
+            WRITE(w_namcouple, '(A, A, A, A, I0, A)') counterpart, ' ', io_field%name, ' 1 ', timestep, ' 2 restart_flc_'//TRIM(io_field%name(3:6))//'_'//TRIM(my_model_name)//'.nc EXPOUT'
         ELSE
-            WRITE(w_namcouple,*) io_field%name, ' ', counterpart, ' 1 ', timestep, ' 2 restart_flc_'//TRIM(io_field%name(3:6))//'_'//TRIM(my_model_name)//'.nc EXPOUT'
+            WRITE(w_namcouple, '(A, A, A, A, I0, A)') io_field%name, ' ', counterpart, ' 1 ', timestep, ' 2 restart_flc_'//TRIM(io_field%name(3:6))//'_'//TRIM(my_model_name)//'.nc EXPOUT'
+#else
+            WRITE(w_namcouple, '(A, A, A, A, I0, A)') counterpart, ' ', io_field%name, ' 1 ', timestep, ' 2 restart_flc_'//TRIM(io_field%name(3:6))//'_'//TRIM(my_model_name)//'.nc EXPORTED'
+        ELSE
+            WRITE(w_namcouple, '(A, A, A, A, I0, A)') io_field%name, ' ', counterpart, ' 1 ', timestep, ' 2 restart_flc_'//TRIM(io_field%name(3:6))//'_'//TRIM(my_model_name)//'.nc EXPORTED'
+#endif
         ENDIF
         WRITE(w_namcouple,*) remapping_info%src_grid_dims, remapping_info%dst_grid_dims, '___ ___ LAG=0'   ! TODO: get rid off string literals here
         WRITE(w_namcouple,*) "R 0 R 0"