Atrac finish flag fix

This implements a few things:
 * Properly sets the finishFlag on the last sample (before returning an error.)
 * Estimates the decoded PCM at 3x as long as the Atrac3+ data.  This was true of one song I tested (well, 3.54x) so I figured it's a better estimate than 1x.
 * Removes the log limiting.  Confuses debugging and no longer needed because games to hammer as much with better return data, and the separated console makes it less a problem anyway.
 * Takes a stab at implementing `sceAtracGetLoopStatus()`.

This fixes:
 * Legend of Heroes 1 - 3
 * Exit (and probably Exit 2)
 * Maybe Fat Princess in some modes (I hear more sounds now... still green.)
 * Games that weren't breaking but were complaining to stdout.

-[Unknown]