MDEV-16421 Make system tables crash safe

Make all system tables in mysql directory of type
engine=Aria

Privilege tables are using transactional=1
Statistical tables are using transactional=0, to allow them
to be quickly updated with low overhead.
Help tables are also using transactional=0 as these are only
updated at init time.

Other changes:
- Aria store engine is now a required engine
- Update comment for Aria tables to reflect their new usage
- Fixed that _ma_reset_trn_for_table() removes unlocked table
  from transaction table list. This was needed to allow one
  to lock and unlock system tables separately from other
  tables, for example when reading a procedure from mysql.proc
- Don't give a warning when using transactional=1 for engines
  that is using transactions. This is both logical and also
  to avoid warnings/errors when doing an alter of a privilege
  table to InnoDB.
- Don't abort on warnings from ALTER TABLE for changes that
  would be accepted by CREATE TABLE.
- New created Aria transactional tables are marked as not movable
  (as they include create_rename_lsn).
- bootstrap.test was changed to kill orignal server, as one
  can't anymore have two servers started at same time on same
  data directory and data files.
- Disable maria.small_blocksize as one can't anymore change
  aria block size after system tables are created.
- Speed up creation of help tables by using lock tables.
- wsrep_sst_resync now also copies Aria redo logs.

1 files changed, 15 insertions, 0 deletions

diff --git a/mysql-test/suite/innodb/r/alter_table.result b/mysql-test/suite/innodb/r/alter_table.result
index 8a0717aa677..3a765a61dd2 100644
--- a/mysql-test/suite/innodb/r/alter_table.result
+++ b/mysql-test/suite/innodb/r/alter_table.result
@@ -22,3 +22,18 @@ alter table t1 change column id2 id4 varchar(100) not null;
 select * from t1 where id4 like 'a';
 id1	id4	id3
 drop table t1;
+create table t1 (a int) transactional=1 engine=aria;
+create table t2 (a int) transactional=1 engine=innodb;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT NULL
+) ENGINE=Aria DEFAULT CHARSET=latin1 PAGE_CHECKSUM=1 TRANSACTIONAL=1
+show create table t2;
+Table	Create Table
+t2	CREATE TABLE `t2` (
+  `a` int(11) DEFAULT NULL
+) ENGINE=InnoDB DEFAULT CHARSET=latin1 TRANSACTIONAL=1
+alter table t1 engine=innodb;
+alter table t1 add column b int;
+drop table t1,t2;