do informativni hlasky pridan prefix Error:

packages/build-server.sh

@@ -11,7 +11,7 @@ VERSION="2.2"
 err()
 {
   echo "FAILED!"
-  cat "$err"
+  echo -n "Error: " && cat "$err"
   rm -f "$err" "$tar" "$sig"
   rm -rf "$package"
   echo