Log Message:
emulators/mednafen: Update to 1.22.1

-- 1.22.1: --

January 27, 2019:
	Changed the default sound device for the OpenBSD sound driver from \ 
"/dev/audio" to "/dev/audio0".

January 26, 2019:
	Semaphores are now implemented with condition variables and mutexes when \ 
compiling against a POSIX threads implementation without sem_timedwait().

January 23, 2019:
	PC-FX: Replaced old RAINBOW IDCT code with newly-written code.

January 20, 2019:
	Some hotkeys in the debugger's memory editor weren't being ignored properly \ 
when in text entry mode; fixed.  (Regression introduced in 1.21.0-UNSTABLE)

January 1, 2019:
	Apple2: Corrected minimum allowed value for the \ 
"apple2.video.mono_lumafilter" setting(was -2 when it should have been \ 
-3).

	SS: Corrected line-scroll handling in double-density interlaced mode with \ 
non-zero LSS; fixes broken background graphics effect in Dural's stage in \ 
"Virtua Fighter 2".

	SS: Added "Linkle Liver Story" to the internal database of games to \ 
use the data cache read bypass kludge with, to fix a crash/hang when going to \ 
the world map.