For the internal "mysql_use_new_user_methods" connections, for each User on the database in the mysql.db table, instead of the previous "mass" clearing method which used a direct call to mysql.db, it's been changed to use the existing function call to remove single Users, for each Uesr (including the system account). This is also a cleaner method to clear existing access hosts. It will also now trigger database_user_destroy_post.sh, where it not do this previously for DB removal. ---- T30061