Exact splash time

The splash screen is displayed while the channel is loading.  When the channel finishes loading, if the time for which the splash screen has been displayed is less than splash_min_time, the player leaves the splash screen up until a total of splash_min_time has elapsed from the time the splash was first displayed.  On the other hand, if the splash has already been displayed for longer than splash_min_time, it is taken down as soon as the channel finishes loading.  So there's no use for a splash_max_time parameter.  splash_min_time will be exact unless it is shorter than the channel load time, in which case there's nothing that could be done to shorten it.

--Mark