Reverting to centralized reveal.js location

Doc/Makefile

@@ -62,7 +62,7 @@ ${BUILDROOT}/webhelp/index.html:${BUILDROOT}/${SCRIPTBASENAME}.xml
 	cd  ${BUILDROOT};\
 	${SAXONCMD} -s:${SCRIPTBASENAME}.xml -xsl:../../ws/Docbook/Extensions/Xsl/docbook2slides.xsl \
          callout.unicode=1 highlight.source=1;\
-        ln -sf ${HOME}/reveal.js Slides;\
+        ln -sf /usr/share/reveal.js Slides;\
         /usr/share/xmlmind/bin/xxetool convert ${XSLPARAM} db5.toWebHelp \
             ${SCRIPTBASENAME}_html.xml -u webhelp
 	cp -f webhelp.css ${BUILDROOT}/webhelp