Add license header to doc file.

docs/en-US/Book_Info_Build_All.xml

@@ -1,11 +1,30 @@
 <?xml version='1.0' encoding='utf-8' ?>
-<!DOCTYPE bookinfo PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "file:///C:/Program%20Files%20(x86)/Publican/DocBook_DTD/docbookx.dtd" [
+<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
 <!ENTITY % BOOK_ENTITIES SYSTEM "cloudstack.ent">
 %BOOK_ENTITIES;
 ]>
+
+<!-- Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements.  See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership.  The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License.  You may obtain a copy of the License at
+    
+    http://www.apache.org/licenses/LICENSE-2.0
+    
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied.  See the License for the
+    specific language governing permissions and limitations
+    under the License.
+-->
+
 <bookinfo id="book-cloudstack">
 	<title>CloudStack Guide</title>
-	<subtitle>Revised August 21, 2012 5:48 pm Pacific</subtitle>
+	<subtitle>Revised September 18, 2012 10:48 am Pacific</subtitle>
 	<productname>Apache CloudStack (incubating)</productname>
 	<productnumber>3.0</productnumber>
 	<edition>1</edition>