Implemented WSF_RESPONSE.put_error (...) and related

Added WSF_RESPONSE.put_character
Renamed  WGI_OUTPUT_STREAM.put_character_8 as put_character  to follow style of put_string  (and not put_string_8)
Refactored the WSF_DEFAULT_SERVICE_LAUNCHER
Added WSF_DEFAULT_SERVICE to be more user friendly
Splitted the wsf/default/ libraries to have wsf/connector/... and being able to handle more than one connector in the same application

library/server/wsf/tests/src/wsf_request_null.e

@@ -0,0 +1,16 @@
+note
+	description: "Summary description for {WSF_REQUEST_NULL}."
+	author: ""
+	date: "$Date$"
+	revision: "$Revision$"
+
+class
+	WSF_REQUEST_NULL
+
+inherit
+	WSF_REQUEST
+
+create {WSF_TO_WGI_SERVICE, WSF_SERVICE}
+	make_from_wgi
+
+end