Documentation / docbook.xslon commit cherry-pick/revert: make direct internal call to merge_tree() (6eb1b43)
   1<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   2                version='1.0'>
   3 <xsl:import href="http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl"/>
   4 <xsl:output method="html" encoding="UTF-8" indent="no" />
   5</xsl:stylesheet>