Add changes for 2.1.5 to the build system

doc/Makefile.am

 #
 
 CHANGELOGS = \
+	changes-2.1.5.html \
 	changes-2.1.4.html \
 	changes-2.1.3.html \
 	changes-2.1.2.html \
@@ -19,6 +20,7 @@ CHANGELOGS = \
 	changes-1.0.4.html
 
 XML = \
+	changes-2.1.4-2.1.5.xml \
 	changes-2.1.3-2.1.4.xml \
 	changes-2.1.2-2.1.3.xml \
 	changes-2.1.1-2.1.2.xml \

doc/changes-2.1.4-2.1.5.xml

@@ -102,7 +102,7 @@
       <para>Add bourn-shell like "here" documents on the CLI. Typical
       usage:
       <code>
-      vcl.inline vcl_new << 42
+      vcl.inline vcl_new &lt;&lt; 42
       backend foo {...}
       sub vcl_recv {...}
       42

doc/changes-2.1.5.xml

+<?xml version="1.0" encoding="utf-8"?>
+<?xml-stylesheet type="text/xml" href="changes-html.xsl"?>
+<!DOCTYPE changelog [
+ <!ENTITY mdash "&#8212;">
+]>
+<changelog xmlns:xi="http://www.w3.org/2001/XInclude">
+  <package>Varnish</package>
+  <version>2.1.5</version>
+
+  <xi:include href="changes-2.1.4-2.1.5.xml"/>
+</changelog>