wmake: Update '-s' option to print the files processed without the rules

Based on patch contributed by Alexey Matveichev
Resolves feature request http://bugs.openfoam.org/view.php?id=2328

wmake/wmakeLnInclude

@@ -138,9 +138,12 @@ fi
 
 cd $incDir || exit 1
 
-[ "$silentOpt" = true ] || {
+if [ "$silentOpt" = true -o -n "$WM_QUIET" ]
+then
+    echo "    ln: $incDir" 1>&2
+else
     echo "$Script: linking include files to $incDir" 1>&2
-}
+fi
 
 
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