Added abstraction WSF_ROUTED, and WSF_FILTERED.

Added under library/server/obsolete/v0 the previous non concurrent friendly version of EWF/WSF, for backward compatiblity.
Removed WSF_CALLBACK_SERVICE and WSF_TO_WGI_SERVICE which are not need with new EWF.

library/server/wsf/src/service/wsf_launchable_service.e

@@ -23,9 +23,15 @@ feature {NONE} -- Initialization
 		do
 		end
 
+feature -- Access
+
 	service_options: detachable WSF_SERVICE_LAUNCHER_OPTIONS
+			-- Optional service options used to configure associated WSF_SERVICE_LAUNCHER.
+
+feature -- Basic operation
 
 	launch (opts: detachable WSF_SERVICE_LAUNCHER_OPTIONS)
+			-- Launch service with optional options `opts'.
 		deferred
 		end