* Fixed a stupid bug with the cache, never use xor to see if a memory area was changed. The + I now use is still not perfect, but it's much better, and it should be enough for what it's used for.
* Fixed a possible crash when loading a savegame because I had forgotten to turn the cd music off before restoring a savegame...
* Add a "turbo" key : the default is del, you can change it in the gui, it just toggles the limit speed setting. If you are not limited by vsync, you can reach 700 fps in neoraine with yuv overlays when disabling the speed limitation with this key!