Fixed various CMS_MODULE.install, by not marked module installed if an error occurred!

Improved Auth related module implementation by having a way to change settings like token, max age.
  - use CMS_SETUP.site_id and related "auth.$module.token" ... configuration values.
  - removed related CMS_..._CONSTANTS classes.

For auth session module, use auth_session as table name, and use VARCHAR(64).
Extracted sql from blog module, and store it under site/scripts/install.sql .
Renamed a few $modulename.sql as install.sql

modules/openid/filter/cms_openid_filter.e

@@ -10,6 +10,7 @@ class
 
 inherit
 	WSF_URI_TEMPLATE_HANDLER
+	
 	CMS_HANDLER
 		rename
 			make as make_handler
@@ -22,32 +23,28 @@ create
 
 feature {NONE} -- Initialization
 
-	make (a_api: CMS_API; a_user_openid_api: CMS_OPENID_API)
+	make (a_api: CMS_API; a_openid_api: CMS_OPENID_API)
 		do
 			make_handler (a_api)
-			user_openid_api := a_user_openid_api
+			openid_api := a_openid_api
 		end
 
-	user_openid_api: CMS_OPENID_API
+	openid_api: CMS_OPENID_API
 
 feature -- Basic operations
 
 	execute (req: WSF_REQUEST; res: WSF_RESPONSE)
 			-- Execute the filter.
-
 		do
-			api.logger.put_debug (generator + ".execute ", Void)
 				-- A valid user
 			if
-				attached {WSF_STRING} req.cookie ({CMS_OPENID_CONSTANTS}.openid_session) as l_roc_openid_session_token
+				attached {WSF_STRING} req.cookie (openid_api.session_token) as l_roc_openid_session_token
 			then
-				if attached user_openid_api.user_openid_by_identity (l_roc_openid_session_token.value) as l_user then
+				if attached openid_api.user_openid_by_identity (l_roc_openid_session_token.value) as l_user then
 					set_current_user (req, l_user)
 				else
 					api.logger.put_error (generator + ".execute login_valid failed for: " + l_roc_openid_session_token.value , Void)
 				end
-			else
-				api.logger.put_debug (generator + ".execute without authentication", Void)
 			end
 			execute_next (req, res)
 		end