* Move almost all uses of StringBuffer to StringBuilder,

for efficiency (thanks Arsene for the suggestion)

apps/routerconsole/java/src/net/i2p/router/web/UpdateHandler.java

@@ -156,7 +156,7 @@ public class UpdateHandler {
             // ignored
         }
         public void bytesTransferred(long alreadyTransferred, int currentWrite, long bytesTransferred, long bytesRemaining, String url) {
-            StringBuffer buf = new StringBuffer(64);
+            StringBuilder buf = new StringBuilder(64);
             buf.append("<b>Updating</b> ");
             double pct = ((double)alreadyTransferred + (double)currentWrite) /
                          ((double)alreadyTransferred + (double)currentWrite + (double)bytesRemaining);