PDF: Quote titles in xrefs to chapters instead of italicizing them.

src/main/resources/cloud/fo/docbook.xsl

@@ -940,4 +940,22 @@
       </fo:block-container>
     </xsl:template>
 
+<xsl:template match="d:chapter|d:appendix" mode="insert.title.markup">
+  <xsl:param name="purpose"/>
+  <xsl:param name="xrefstyle"/>
+  <xsl:param name="title"/>
+
+  <xsl:choose>
+    <xsl:when test="$purpose = 'xref'">
+      <!-- <fo:inline font-style="italic"> -->
+        <xsl:copy-of select="$title"/>
+      <!-- </fo:inline> -->
+    </xsl:when>
+    <xsl:otherwise>
+      <xsl:copy-of select="$title"/>
+    </xsl:otherwise>
+  </xsl:choose>
+</xsl:template>
+
+
 </xsl:stylesheet>

src/main/resources/cloud/fo/gentex_mods.xml

@@ -8,7 +8,10 @@
     <l:gentext key="abstract" text=""/>
 
     <l:context name="title-numbered">
-        <l:template name="chapter" text="%n. %t"/>
+        <l:template name="chapter" text='%n. %t'/>
+    </l:context>
+    <l:context name="xref-number-and-title">
+      <l:template name="chapter" text='Chapter %n, “%t”'/>
     </l:context>
   </l:l10n>
 </l:i18n>