Added store_mysql_fake persistence solution, to compile a ROC CMS system with mysql interface, but no real mysql driver.

This is mainly during dev using sqlite, to include the mysql interfaces without depending on related C .lib files that are not always compiled.

library/persistence/store_mysql_fake/src/cms_storage_store_mysql.e

@@ -0,0 +1,22 @@
+note
+	description: "Summary description for {CMS_STORAGE_STORE_MYSQL}."
+	date: "$Date$"
+	revision: "$Revision$"
+
+class
+	CMS_STORAGE_STORE_MYSQL
+
+inherit
+	CMS_STORAGE_NULL
+
+create
+	make
+
+feature
+
+	make
+		do
+			default_create
+		end
+
+end -- class CMS_STORAGE_STORE_MYSQL

library/persistence/store_mysql_fake/src/cms_storage_store_mysql_builder.e

@@ -0,0 +1,36 @@
+note
+	description: "[
+		Interface responsible to instantiate CMS_STORAGE_STORE_MYSQL object.
+	]"
+	author: "$Author$"
+	date: "$Date$"
+	revision: "$Revision$"
+
+class
+	CMS_STORAGE_STORE_MYSQL_BUILDER
+
+inherit
+	CMS_STORAGE_NULL_BUILDER
+		redefine
+			storage
+		end
+
+create
+	make
+
+feature {NONE}
+
+	make
+		do
+		end
+
+feature
+
+	storage (a_setup: CMS_SETUP; a_error_handler: ERROR_HANDLER): detachable CMS_STORAGE_NULL
+			-- CMS Storage object based on CMS setup `a_setup`.
+		do
+			a_error_handler.add_custom_error (0, "Could not connect to the MySQL storage", Void)
+		end
+
+end -- class CMS_STORAGE_STORE_MYSQL_BUILDER
+