[kodi/f30] (4 commits) ...Update to 18.4, patch for Python 3 support (F32+ only)

Summary of changes: 68b7ad3... Drop wiiremote man page if support is disabled (*) 8214806... Fix filename of manpage (*) 326d785... Rebuild for new ffmpeg version (*) e74e460... Update to 18.4, patch for Python 3 support (F32+ only) (*) (*) This commit already existed in another branch; no separate mail sent