[svn r10673] Default value of lang field in system-announcements is NULL

main/install/migrate-db-1.6.x-1.8.0-pre.sql

@@ -36,7 +36,7 @@ CREATE TABLE survey_reminder(sid int NOT NULL default '0', db_name varchar(100)
 CREATE TABLE survey_user_info(id int NOT NULL auto_increment, user_id int NOT NULL default '0', survey_id int NOT NULL default '0', db_name varchar(200) default NULL, firstname varchar(200) default NULL, lastname varchar(200) default NULL, email varchar(200) default NULL, organization  text, age int default NULL, registered char(1) default NULL, attempted varchar(10) NOT NULL default '', PRIMARY KEY (id));
 -- ALTER TABLE sys_announcement CHANGE visible_student visible_student enum('0','1') NOT NULL default '0';
 -- ALTER TABLE sys_announcement CHANGE visible_guest visible_guest enum('0','1') NOT NULL default '0';
-ALTER TABLE sys_announcement ADD lang varchar(70) NOT NULL default '';
+ALTER TABLE sys_announcement ADD lang varchar(70) NULL;
 ALTER TABLE user CHANGE auth_source auth_source varchar(50) default 'platform';
 ALTER TABLE user ADD language varchar(40) default NULL;
 ALTER TABLE user ADD registration_date datetime NOT NULL default '0000-00-00 00:00:00';