Update macOS support files to the latest version.

Author: pchote

mod.config

@@ -68,7 +68,7 @@ PACKAGING_FAQ_URL="http://wiki.openra.net/FAQ"
 PACKAGING_AUTHORS="Example Mod authors"
 
 # The git tag to use for the macOS Launcher files.
-PACKAGING_OSX_LAUNCHER_TAG="osx-launcher-20191003"
+PACKAGING_OSX_LAUNCHER_TAG="osx-launcher-20191007"
 
 # Filename to use for the launcher executable on Windows.
 PACKAGING_WINDOWS_LAUNCHER_NAME="ExampleMod"