help: Include license information on every help page

...and not only the front page.

help/C/calendar.page

@@ -4,6 +4,7 @@
   <info>
     <link type="guide" xref="index#dialogs"/>
     <desc>Use the <cmd>--calendar</cmd> option.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>Calendar Dialog</title>
     <p>

help/C/color-selection.page

@@ -4,6 +4,7 @@
   <info>
     <link type="guide" xref="index#dialogs"/>
     <desc>Use the <cmd>--color-selection</cmd> option.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>Color Selection Dialog</title>
   <p>

help/C/entry.page

@@ -4,6 +4,7 @@
   <info>
     <link type="guide" xref="index#dialogs"/>
     <desc>Use the <cmd>--entry</cmd> option.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>Text Entry Dialog</title>
     <p>

help/C/error.page

@@ -4,6 +4,7 @@
   <info>
     <link type="guide" xref="message"/>
     <desc>Use the <cmd>--error</cmd> option.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>Error Dialog</title>
       <p>

help/C/file-selection.page

@@ -4,6 +4,7 @@
   <info>
     <link type="guide" xref="index#dialogs"/>
     <desc>Use the <cmd>--file-selection</cmd> option.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>File Selection Dialog</title>
     <p>

help/C/forms.page

@@ -4,6 +4,7 @@
   <info>
     <link type="guide" xref="index#dialogs"/>
     <desc>Use the <cmd>--forms</cmd> option.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>Forms Dialog</title>
     <p>

help/C/info.page

@@ -4,6 +4,7 @@
   <info>
     <link type="guide" xref="message"/>
     <desc>Use the <cmd>--info</cmd> option.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>Info Dialog</title>
       <p>

help/C/intro.page

@@ -4,6 +4,7 @@
 <info>
   <link type="guide" xref="index"/>
   <desc><app>Zenity</app> enables you to create the various types of simple dialog.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
 </info>
 <title>Introduction</title>
 <p>

help/C/list.page

@@ -4,6 +4,7 @@
   <info>
     <link type="guide" xref="index#dialogs"/>
     <desc>Use the <cmd>--list</cmd> option.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>List Dialog</title>
     <p>

help/C/message.page

@@ -9,6 +9,7 @@
       <link xref="question">Question</link>,
       <link xref="warning">Warning</link>
     </desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>Message Dialog</title>
   <p>

help/C/notification.page

@@ -4,6 +4,7 @@
   <info>
     <link type="guide" xref="index#dialogs"/>
     <desc>Use the <cmd>--notification</cmd> option.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>Notification Icon</title>
     <p>Use the <cmd>--notification</cmd> option to create a notification icon.</p>

help/C/password.page

@@ -4,6 +4,7 @@
   <info>
     <link type="guide" xref="index#dialogs"/>
     <desc>Use the <cmd>--password</cmd> option.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>Password Dialog</title>
   <p>

help/C/progress.page

@@ -4,6 +4,7 @@
   <info>
     <link type="guide" xref="index#dialogs"/>
     <desc>Use the <cmd>--progress</cmd> option.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>Progress Dialog</title>
     <p>

help/C/question.page

@@ -4,6 +4,7 @@
   <info>
     <link type="guide" xref="message"/>
     <desc>Use the <cmd>--question</cmd> option.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>Question Dialog</title>
       <p>

help/C/scale.page

@@ -4,6 +4,7 @@
   <info>
     <link type="guide" xref="index#dialogs"/>
     <desc>Use the <cmd>--scale</cmd> option.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>Scale Dialog</title>
   <p>

help/C/text.page

@@ -4,6 +4,7 @@
   <info>
     <link type="guide" xref="index#dialogs"/>
     <desc>Use the <cmd>--text-info</cmd> option.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>Text Information Dialog</title>
     <p>

help/C/usage.page

@@ -4,6 +4,7 @@
 <info>
   <link type="guide" xref="index"/>
   <desc>You can use <app>Zenity</app> to create simple dialogs that interact graphically with the user.</desc>
+  <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
 </info>
 <title>Usage</title>
     <p>

help/C/warning.page

@@ -4,6 +4,7 @@
   <info>
     <link type="guide" xref="message"/>
     <desc>Use the <cmd>--warning</cmd> option.</desc>
+    <include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude" />
   </info>
   <title>Warning Dialog</title>
       <p>