new usesys definitions

libs/mesa/haxe/AudioTypes.hx

@@ -0,0 +1,5 @@
+package haxe;
+
+typedef SourceHandle = hxd.snd.openal.AudioTypes.SourceHandle;
+typedef BufferHandle = hxd.snd.openal.AudioTypes.BufferHandle;
+typedef SoundDriver = hxd.snd.openal.Driver;

libs/mesa/haxe/System.hx

@@ -11,6 +11,9 @@ class System {
 
 	public static var name = "OSMesa";
 
+	public static var savePathPrefix = "";
+	public static var dataPathPrefix = "";
+
 	public static function init() {
 		var attribs : Array<Int> = [
 			mesa.Context.FORMAT, mesa.Context.RGBA,