Modernize this logging.

git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@863 ed5b42cb-e716-0410-a449-f6a68f950b19

src/java/com/threerings/util/keybd/Keyboard.java

@@ -75,8 +75,7 @@ public class Keyboard
             }
 
         } catch (Throwable t) {
-            log.info("Failed to load native keyboard library " +
+            log.info("Failed to load native keyboard library", t);
-                     "[cause=" + t + "].");
             _haveLib = false;
         }
     }