FR be able to run several alter table in series (or pass a create table statement)

Due to MySQL and MariaDB issues in ALTER TABLE, it is sometimes not possible to run all ALTER commands as a single ALTER TABLE. It is required to run several of them,

Examples :
https://bugs.mysql.com/bug.php?id=78891

But also
https://jira.mariadb.org/browse/MDEV-9548

Please note that Facebook osc version solves this problem by giving the new CREATE TABLE which solves all kind of similar issues. see https://github.com/facebookincubator/OnlineSchemaChange (copy mode)