fix galera.galera_sst_mysqldump test to work:
* must connect to 127.0.0.1, where mysqld is listening
* disable wsrep_sync_wait in wsrep_sst_mysqldump, otherwise
sst can deadlock
* allow 127.0.0.1 for bind_address and wsrep_sst_receive_address.
(it's useful in tests, or when two nodes are on the same box,
or when nodes are on different boxes, but the connection is
tunelled, or whatever. Don't judge user's setup). MDEV-14070
* don't wait for client connections to die when doing
mysqldump sst. they'll die in a due time, and if needed mysql
will wait on locks until they do. MDEV-14069
Also don't mark it big, to make sure it's sufficiently tested
Merged lp:maria/maria-10.0-galera up to revision 3879.
Added a new functions to handler API to forcefully abort_transaction,
producing fake_trx_id, get_checkpoint and set_checkpoint for XA. These
were added for future possiblity to add more storage engines that
could use galera replication.
