Refactors

• remove expensive busy loop in render throttler 6d36424bb  

  Replaces a busy loop with a much cheaper mutex condition variable to control FPS.

  The maxfps option now works for values less than 60 fps.

Player

• add cache to generation of translucency tables c38897790  

  This took up a lot of CPU time during the titlescreen and during animations such as screen wipes / triforce pickup / etc.