FIX: make_db now fails on unknown commands.

utils/make_db

@@ -248,5 +248,5 @@ case $1 in
     "test-connection") test-connection ;;
     "install_db") install_db ;;
     "restore_db") restore_db $2 ;;
-    *) echo "Unknown action: $1"
+    *) echo "Unknown action: $1"; exit 32
 esac