Finished Sound fixes

ChangeLog

  OpenRaider (0.1.2) xythobuz <xythobuz@xythobuz.de>
 
 	[ 20140101 ]
+	* Fixed Wavebuffer loading of Sound subsystem, as well as
+	  making the Sound Unit Test buildable on Mac.
+	  Added new argument to loadWav, length of buffer.
 	* Changed (unknown) included Font to Droid Sans Mono
 	* Fixed Render bug, now console is visible again
 	* Implemented CMD + Q shortcut on Mac to quit

src/Sound.cpp

 #include <AL/al.h>
 #include <AL/alc.h>
 #include <AL/alut.h>
-#include <AL/alext.h>
 #endif
 #endif