Updated CMS code.

Separated code to have a lib and an example.
Improved design, fixed a few issues related to folder location.

This is still experimental and require more work to be really friendly to use.

draft/application/cms/src/kernel/auth/cms_auth_engine.e

@@ -0,0 +1,16 @@
+note
+	description: "Summary description for {CMS_AUTH_ENGINE}."
+	author: ""
+	date: "$Date$"
+	revision: "$Revision$"
+
+deferred class
+	CMS_AUTH_ENGINE
+
+feature -- Status
+
+	valid_credential (u,p: READABLE_STRING_32): BOOLEAN
+		deferred
+		end
+
+end

draft/application/cms/src/kernel/auth/cms_storage_auth_engine.e

@@ -0,0 +1,32 @@
+note
+	description: "Summary description for {CMS_STORAGE_AUTH_ENGINE}."
+	author: ""
+	date: "$Date$"
+	revision: "$Revision$"
+
+class
+	CMS_STORAGE_AUTH_ENGINE
+
+inherit
+	CMS_AUTH_ENGINE
+
+create
+	make
+
+feature {NONE} -- Initialization
+
+	make (a_storage: like storage)
+		do
+			storage := a_storage
+		end
+
+	storage: CMS_STORAGE
+
+feature -- Status
+
+	valid_credential (u,p: READABLE_STRING_32): BOOLEAN
+		do
+			Result := storage.is_valid_credential (u, p)
+		end
+
+end