Installation fails on MySQL 5.7 because auto_increment columns can be NULL

SQL ERROR [ mysqli ]

All parts of a PRIMARY KEY must be NOT NULL; if you need NULL in a key, use UNIQUE instead [1171]

SQL

CREATE TABLE phpbb_acl_options ( auth_option_id mediumint(8) UNSIGNED NULL auto_increment, auth_option varchar(50) DEFAULT '' NOT NULL, is_global tinyint(1) UNSIGNED DEFAULT '0' NOT NULL, is_local tinyint(1) UNSIGNED DEFAULT '0' NOT NULL, founder_only tinyint(1) UNSIGNED DEFAULT '0' NOT NULL, PRIMARY KEY (auth_option_id) ) CHARACTER SET `utf8` COLLATE `utf8_bin`;

-                               if (!is_null($column_data[1]))

+                               if (!is_null($column_data[1]) || (isset($column_data[2]) && $column_data[2] == 'auto_increment'))