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updaters.inc contains:

		// 1.14
		array( 'add_field', 'site_stats',     'ss_active_users',  'patch-ss_active_users.sql' ),
		array( 'do_active_users_init' ),
		array( 'add_field', 'ipblocks',     'ipb_allow_usertalk',  'patch-ipb_allow_usertalk.sql' ),
		array( 'do_unique_pl_tl_il' ),

		// 1.15
		array( 'add_table', 'change_tag',			   'patch-change_tag.sql' ),
		array( 'add_table', 'tag_summary',			   'patch-change_tag.sql' ),
		array( 'add_table', 'valid_tag',			   'patch-change_tag.sql' ),


However, do_unique_pl_tl_il is missing in 1.14. It appeared in 1.15. Thus it should be moved to the section below.