add new-style schema versions and updater

schema/versions/mysql/5.sql

@@ -0,0 +1,12 @@
+begin;
+
+create table ttrss_scheduled_updates (id integer not null primary key auto_increment,
+	owner_uid integer not null,
+	feed_id integer default null,
+	entered datetime not null,
+	foreign key (owner_uid) references ttrss_users(id) ON DELETE CASCADE,
+	foreign key (feed_id) references ttrss_feeds(id) ON DELETE CASCADE) TYPE=InnoDB;
+
+update ttrss_version set schema_version = 5;
+
+commit;