Deprecated user levels found in two wp-admin files

I ran wp-debug to check on something in my blog and it came up with two problems that need to be fixed in the WordPress code:
wp-admin/includes/plugin.php:1008 – Usage of user levels by plugins and themes is deprecated. Use roles and capabilities instead.
wp-admin/menu-header.php:112 – Usage of user levels by plugins and themes is deprecated. Use roles and capabilities instead.