extras/macosx: update codesign script for GateKeeper v2 needed to support future OS X releases
extras/macosx: update codesign script for GateKeeper v2 needed to support future OS X releases

(cherry picked from commit 367a9a4764d3acf174c9e3091289df9300a4a1a5)

vlc-mirror/vlc-2.1,jomanmuk/vlc-2.1,jomanmuk/vlc-2.1,vlc-mirror/vlc-2.1,vlc-mirror/vlc-2.1,vlc-mirror/vlc-2.1,jomanmuk/vlc-2.1,vlc-mirror/vlc-2.1,jomanmuk/vlc-2.1,vlc-mirror/vlc-2.1,vlc-mirror/vlc-2.1,jomanmuk/vlc-2.1,jomanmuk/vlc-2.1,jomanmuk/vlc-2.1