ASCIIDoc: Copy namespaces to root element

During the postprocess step, the stylesheets copy some often used
namespaces (XLink, XInclude, ITS) to the root element of the result
tree.

This makes it easier to add, for example, its:translate attribute
into the docinfo file.

daps-xslt/asciidoc/postprocess.xsl

@@ -45,13 +45,34 @@
 <xsl:stylesheet version="1.0"
  xmlns="&db5ns;"
  xmlns:d="&db5ns;"
+ xmlns:exsl="http://exslt.org/common"
+ xmlns:xi="http://www.w3.org/2001/XInclude"
  xmlns:xlink="http://www.w3.org/1999/xlink"
+ xmlns:its="http://www.w3.org/2005/11/its"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
- exclude-result-prefixes="d">
+ exclude-result-prefixes="d exsl">
 
   <xsl:import href="../common/copy.xsl"/>
   <xsl:output indent="yes"/>
 
+  <xsl:variable name="namespaces">
+    <its:foo/>
+    <xlink:foo/>
+    <xi:foo/>
+  </xsl:variable>
+  <xsl:variable name="namespace-nodes" select="exsl:node-set($namespaces)"/>
+
+  <!-- This rule is only necessary to copy the namespaces into the root element -->
+  <xsl:template match="/*">
+    <xsl:copy>
+      <!-- Copy the namespaces -->
+      <xsl:for-each select="$namespace-nodes//*/namespace::*">
+           <xsl:copy-of select="."/>
+       </xsl:for-each>
+      <xsl:apply-templates/>
+    </xsl:copy>
+  </xsl:template>
+
   <xsl:template match="d:authorinitials"/>
   <!-- othername & lineage arguably out to be supported by GeekoDoc but aren't currently. -->
   <xsl:template match="d:othername|d:lineage"/>