Bump buffer size on Util.copy().

Review by: spoon

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@5345 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/dev/core/src/com/google/gwt/dev/util/Util.java b/dev/core/src/com/google/gwt/dev/util/Util.java
index 83c42cd..63f8603 100644
--- a/dev/core/src/com/google/gwt/dev/util/Util.java
+++ b/dev/core/src/com/google/gwt/dev/util/Util.java
@@ -165,7 +165,7 @@
 
   public static void copy(InputStream is, OutputStream os) throws IOException {
     try {
-      byte[] buf = new byte[8 * 1024];
+      byte[] buf = new byte[32 * 1024];
       int i;
       while ((i = is.read(buf)) != -1) {
         os.write(buf, 0, i);