Added '-a' switch to go between OpenAL and MixSDL at runtime

git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@656 8092fc87-c524-0410-9efc-e669fe64eaf9

sc2/ChangeLog

@@ -1,6 +1,7 @@
 Changes towards version 0.2:
+- Added '-a' switch to go between OpenAL and MixSDL at runtime -PBlue
 - Melnorme will pronounce numbers now -fOSSiL
-- Added icons to win32 builds (MSVC only for now)
+- Added icons to win32 builds (MSVC and mingw) -fOSSiL
 - Removed the GraphicStrength code, since all that is handled with
   an arithmetic blit routine outside of the drawing thread
 - Added an improved version of biadapt scaling filter,

sc2/TODO

@@ -101,7 +101,6 @@ Implementation bugs (low priority):
 	vux001.ogg utwig072.ogg umgah027.ogg talkp068.ogg spaho007.ogg
 	syree012.ogg syree021.ogg syree028.ogg syree069.ogg orz000.ogg
   - black041.ogg is wrong (identical to black042.ogg)
-  - Using arrow keys with SDL_mixer will not work.
   - More work should be done to better sync the text we have.
 - Slider doesn't track the audio very well
 

sc2/doc/users/manual.txt

@@ -38,6 +38,12 @@ combine with -r 320x240.
 Use OpenGL drivers.  This produces higher-quality graphics, and may be
 faster as well -- but it also may not work on older cards.
 
+	-a           (or --openal)
+
+Use OpenAL drivers.  This may produce higher-quality sound, but
+it is not very stable on linux platforms, and may not work well
+with some sound cards.
+
 	-c           (or --scale=mode)
 
 Graphics scaling mode (bilinear, sai or supersai). Default is none.