[kmplayer] KMPlayer 0.9.3

Nothing new, just a quality improvement and bug fixes release, downloader reports now an error if file could not be written or disk full, crash fix that happened when clicking a container only item in the active list, stopping flash playing could cause a hang the application and a few SMIL improvements. ChangeLog * Support SMIL region backgroundOpacity and media type mediaBackgroundOpacity * More speed-ups in XML tokenizer * Start of some simple internal tests * Call NpStream finish on user stop * Fix crash when activating a container only link in the active list * Support 'fill="transition"` inside 'seq' tags, used in YouTube presentation * Downloader now gives a message when file could not be written