Replaced notion of session uuid by session id which is more generic (could be a uuid, or something else).

Use STRING_TABLE for the implementation of session data container.
Added a few missing comments.

library/server/wsf/session/wsf_session_data.e

@@ -8,7 +8,13 @@ class
 	WSF_SESSION_DATA
 
 inherit
-	HASH_TABLE [detachable ANY, READABLE_STRING_32]
+	STRING_TABLE [detachable ANY]
+		rename
+			make as old_make,
+			make_caseless as make
+		redefine
+			empty_duplicate
+		end
 
 create
 	make
@@ -24,4 +30,22 @@ feature -- Element change
 			expiration := dt
 		end
 
+feature {NONE} -- Duplication
+
+	empty_duplicate (n: INTEGER): like Current
+			-- Create an empty copy of Current that can accommodate `n' items
+		do
+			create Result.make (n)
+		end
+
+note
+	copyright: "2011-2014, Jocelyn Fiat, Javier Velilla, Olivier Ligot, Colin Adams, Eiffel Software and others"
+	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
+	source: "[
+			Eiffel Software
+			5949 Hollister Ave., Goleta, CA 93117 USA
+			Telephone 805-685-1006, Fax 805-685-6869
+			Website http://www.eiffel.com
+			Customer support http://support.eiffel.com
+		]"
 end