Update to v094r38 release.

byuu says:

I'll post more detailed changes later, but basically:
- fixed Baldur's Gate bug
- guess if no flash ROM ID present (fixes Magical Vacation, many many
  others)
- nall cleanups
- sfc/cartridge major cleanups
- bsxcartridge/"bsx" renamed to mcc/"mcc" after the logic chip it uses
  (consistency with SGB/ICD2)
- ... and more!

ruby/input/joypad/udev.cpp

@@ -107,7 +107,7 @@ struct InputJoypadUdev {
       play.type = EV_FF;
       play.code = jp.effectID;
       play.value = enable;
-      write(jp.fd, &play, sizeof(input_event));
+      auto unused = write(jp.fd, &play, sizeof(input_event));
       return true;
     }