Renamed "ext" folder as "contrib" folder and reorganized a little bit

Renamed any *_APPLICATION as *_SERVICE
   mainly because those components
   such as WSF_APPLICATION, renamed as WSF_SERVICE
   are not always the main application entry, and "service" describe them better
Minor implementation change in WSF_REQUEST
Cosmetics

examples/restbucks/src/utils/etag_utils.e

@@ -1,6 +1,5 @@
 note
 	description: "Summary description for {ETAG_UTILS}."
-	author: ""
 	date: "$Date$"
 	revision: "$Revision$"
 
@@ -8,25 +7,24 @@ class
 	ETAG_UTILS
 
 inherit
-
 	ARRAY_FACILITIES
 
-feature
-	md5_digest ( a_string : STRING ) : STRING
-		-- Cryptographic hash function that produces a 128-bit (16-byte) hash value, based on `a_string'
+feature -- Access
+
+	md5_digest (a_string: STRING): STRING
+			-- Cryptographic hash function that produces a 128-bit (16-byte) hash value, based on `a_string'
 		local
 			md5: MD5
 			output: SPECIAL [NATURAL_8]
-
 		do
 			create md5.make
 			create output.make_filled (0, 16)
 			md5.sink_string (a_string)
 			md5.do_final (output, 0)
 			Result := as_natural_32_be (output, 0).to_hex_string
-			Result := Result + as_natural_32_be (output, 4).to_hex_string
-			Result := Result + as_natural_32_be (output, 8).to_hex_string
-			Result := Result + as_natural_32_be (output, 12).to_hex_string
+			Result.append (as_natural_32_be (output, 4).to_hex_string)
+			Result.append (as_natural_32_be (output, 8).to_hex_string)
+			Result.append (as_natural_32_be (output, 12).to_hex_string)
 		end
 
 note