Added debug clause to detect in WSF_ROUTER.map_with_request_methods the existing conflicts with similar mapping.

Added smart handling of HEAD request.
Exported some internal features of WSF_REQUEST and WSF_RESPONSE to respectively WSF_REQUEST_EXPORTER and WSF_RESPONSE_EXPORTER

library/server/wsf/router/context/wsf_router_context_mapping.e

@@ -9,6 +9,9 @@ deferred class
 
 inherit
 	WSF_ROUTER_MAPPING
+		redefine
+			debug_output
+		end
 
 feature -- Access		
 
@@ -17,6 +20,14 @@ feature -- Access
 		deferred
 		end
 
+feature -- Status report
+
+	debug_output: STRING
+			-- String that should be displayed in debugger to represent `Current'.
+		do
+			Result := Precursor + " {" + {C}.name + "}"
+		end
+
 note
 	copyright: "2011-2012, Jocelyn Fiat, Javier Velilla, Olivier Ligot, Eiffel Software and others"
 	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"