New documentation for pg_probackup

doc/probackup.xml

@@ -0,0 +1,12 @@
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+          "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"
+[
+<!ENTITY pgprobackup     SYSTEM "pgprobackup.xml">
+]>
+
+<book id="pg-probackup">
+  <reference>
+   <title>pg_probackup Documentation</title>
+&pgprobackup;
+  </reference>
+</book>

doc/stylesheet.xsl

@@ -0,0 +1,48 @@
+<?xml version='1.0'?>
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+                version='1.0'
+                xmlns="http://www.w3.org/TR/xhtml1/transitional"
+                exclude-result-prefixes="#default">
+
+<xsl:import href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"/>
+
+<xsl:param name="toc.max.depth" select="4"></xsl:param>
+<xsl:param name="toc.section.depth" select="3"></xsl:param>
+
+<xsl:template match="refentry" mode="toc">
+  <xsl:apply-templates mode="toc" select="refsect1" />
+</xsl:template>
+
+<xsl:template match="refsect1" mode="toc">
+  <xsl:param name="toc-context" select="."/>
+  <xsl:call-template name="subtoc">
+    <xsl:with-param name="toc-context" select="$toc-context"/>
+    <xsl:with-param name="nodes" select="refsect2"/>
+  </xsl:call-template>
+</xsl:template>
+
+<xsl:template match="refsect2" mode="toc">
+  <xsl:param name="toc-context" select="."/>
+  <xsl:call-template name="subtoc">
+    <xsl:with-param name="toc-context" select="$toc-context"/>
+    <xsl:with-param name="nodes" select="refsect3"/>
+  </xsl:call-template>
+</xsl:template>
+
+<xsl:template match="refsect3" mode="toc">
+  <xsl:param name="toc-context" select="."/>
+  <xsl:call-template name="subtoc">
+    <xsl:with-param name="toc-context" select="$toc-context"/>
+  </xsl:call-template>
+</xsl:template>
+
+
+<xsl:template match="productname">
+  <xsl:call-template name="inline.charseq"/>
+</xsl:template>
+
+<xsl:param name="generate.toc">
+book/reference toc, title
+</xsl:param>
+
+</xsl:stylesheet>