Fix some javadoc 8 errors in libs

This fixes the errors in the libraries that opsu uses that
the new html linter in the Java 8 javadoc tool catches and
classifies as error.

Whether or not this should be merged or whether this should
be fixed upstream first is for someone else to decide :P

src/org/newdawn/slick/openal/OpenALStreamPlayer.java

@@ -46,7 +46,7 @@ import org.newdawn.slick.util.ResourceLoader;
  * as required.
  * 
  * @author Kevin Glass
- * @author Nathan Sweet <misc@n4te.com>
+ * @author Nathan Sweet  {@literal <misc@n4te.com>}
  * @author Rockstar play and setPosition cleanup 
  */
 public class OpenALStreamPlayer {