Fixed texture anti-aliasing (gee, couldn't they have told us it was this easy...)

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/branches/irrlicht@4239 178a84e3-b1eb-0310-8ba1-8eac791a3b58

data/gui/okolaks.xml

@@ -2,8 +2,10 @@
 
 <font type="bitmap">
 
-	<Texture index="0" filename="okolaks0.png" hasAlpha="false" />
+	<Texture index="0" filename="okolaks0.png" hasAlpha="true" />
 	<Texture index="1" filename="okolaks1.png" hasAlpha="false" />
+	<Texture index="2" filename="okolaks2.png" hasAlpha="false" />
+	<Texture index="3" filename="okolaks3.png" hasAlpha="false" />
 
 	<c c="" r="0, 0, 1, 33" o="11" />
 	<c c="
" r="2, 0, 3, 33" o="11" />