Made persistence design more flexible, and no requirement on mysql by default.

examples/demo/demo-safe.ecf

@@ -12,6 +12,8 @@
 		<library name="base" location="$ISE_LIBRARY\library\base\base-safe.ecf"/>
 		<library name="cms" location="..\..\cms-safe.ecf" readonly="false"/>
 		<library name="cms_demo_module" location="modules\demo\cms_demo_module-safe.ecf" readonly="false"/>
+		<library name="persistence_mysql" location="..\..\library\persistence\implementation\mysql\persistence_mysql-safe.ecf" readonly="false"/>
+
 		<library name="layout" location="..\..\library\layout\layout-safe.ecf" readonly="false"/>
 		<library name="wsf" location="$ISE_LIBRARY\contrib\library\web\framework\ewf\wsf\wsf-safe.ecf"/>
 		<library name="wsf_extension" location="$ISE_LIBRARY\contrib\library\web\framework\ewf\wsf\wsf_extension-safe.ecf" readonly="false"/>

examples/demo/site/config/cms.ini

@@ -1,6 +1,11 @@
-engine=smarty
-site.name=EWF Web CMS
-site.email=your@email.com
-var-dir=var
-files-dir=files
+[layout]
+root-dir=site/www
+themes-dir=site/themes
+
+[site]
+name=Eiffel CMS
+email=your@email.com
 theme=bootstrap
+
+[misc]
+smtp=localhost

examples/demo/src/ewf_roc_server.e

@@ -147,6 +147,8 @@ feature -- CMS setup
 			debug ("refactor_fixme")
 				to_implement ("To implement custom storage")
 			end
+			a_setup.storage_drivers.force (create {CMS_STORAGE_MYSQL_BUILDER}.make, "mysql")
 		end
+
 end