bind/java: add mising copyright statements.

Change-Id: Ifb120cba013d48fa83af41a43ccbbe7de87b26c8
Reviewed-on: https://go-review.googlesource.com/9408
Reviewed-by: David Crawshaw <crawshaw@golang.org>

bind/java/Seq.java

@@ -1,3 +1,7 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
 package go;
 
 import android.util.Log;