Applied wsf_extension creation, and classes moved from wsf to wsf_extension

draft/library/server/request/rest/rest-safe.ecf

@@ -11,6 +11,7 @@
 		</option>
 		<library name="base" location="$ISE_LIBRARY\library\base\base-safe.ecf"/>
 		<library name="wsf" location="..\..\..\..\..\library\server\wsf\wsf-safe.ecf" readonly="false"/>
+		<library name="wsf_extension" location="..\..\..\..\..\library\server\wsf_extension\wsf_extension-safe.ecf" readonly="false"/>
 		<library name="http" location="..\..\..\..\..\library\protocol\http\http-safe.ecf"/>
 		<library name="uri_template" location="..\..\..\..\..\library\protocol\uri_template\uri_template-safe.ecf"/>
 		<cluster name="contrib" location=".\src\contrib\" recursive="true">

draft/library/server/request/rest/rest.ecf

@@ -10,6 +10,7 @@
 		<option warning="true" full_class_checking="true"/>
 		<library name="base" location="$ISE_LIBRARY\library\base\base.ecf"/>
 		<library name="wsf" location="..\..\..\..\..\library\server\wsf\wsf.ecf"/>
+		<library name="wsf_extension" location="..\..\..\..\..\library\server\wsf_extension\wsf_extension.ecf" readonly="false"/>
 		<library name="http" location="..\..\..\..\..\library\protocol\http\http.ecf"/>
 		<library name="uri_template" location="..\..\..\..\..\library\protocol\uri_template\uri_template.ecf"/>
 		<cluster name="contrib" location=".\src\contrib\" recursive="true">

draft/library/server/request/rest/src/rest_request_handler.e

@@ -10,6 +10,8 @@ deferred class
 inherit
 	WSF_HANDLER [C]
 
+	WSF_HANDLER_HELPER
+
 feature -- Access
 
 	authentication_required (req: WSF_REQUEST): BOOLEAN

examples/upload_image/src/image_uploader.e

@@ -12,8 +12,6 @@ inherit
 
 	WSF_URI_TEMPLATE_ROUTED_SERVICE
 
-	WSF_HANDLER_HELPER
-
 create
 	make