Added SCOOP support for WSF.

WSF_SERVICE is deeply changed, and addition of WSF_EXECUTION.
Todo: code cleaning, removing useless things.

library/server/ewsgi/specification/request/wgi_request.e

@@ -157,7 +157,7 @@ feature -- Eiffel WGI access
 		deferred
 		end
 
-	wgi_connector: detachable WGI_CONNECTOR
+	wgi_connector: detachable separate WGI_CONNECTOR
 			-- Associated Eiffel WGI connector
 		deferred
 		end

library/server/ewsgi/specification/service/wgi_service.e

@@ -11,20 +11,6 @@ note
 deferred class
 	WGI_SERVICE
 
-feature {WGI_CONNECTOR} -- Execution
-
-	execute (req: WGI_REQUEST; res: WGI_RESPONSE)
-			-- Execute the request
-			-- See `req.input' for input stream
-    		--     `req.meta_variables' for the CGI meta variable
-			-- and `res' for output buffer
-		require
-			res_status_unset: not res.status_is_set
-		deferred
-		ensure
-			res_status_set: res.status_is_set
-		end
-
 note
 	copyright: "2011-2012, Jocelyn Fiat, Javier Velilla, Eiffel Software and others"
 	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"