Add variable in bl-kernel/boot/init.php that allows User to rename bl-kernel/admin folder.
User can then define variable in bl-kernel/boot/init.php and change the foldername itself to effect the rename.
Add global variable as necessary and replace 'admin' strings with $adminfolder throughout bl-kernel folder.
Lines 71-75
// Admin folder variable
global $adminfolder;
// Replace Admin string with folder variable.
$filters['admin'] = '/'.$adminfolder.'/';
$filters['admin'] = '/admin/';