Make optimistic parallel replication work with all transactional storage engines

Optimistic replication (MDEV-6676) requires some small support from a
transactional storage engine to correctly replicate transactions in parallel.

So we should add such support to relevant storage engines (beside
innodb/xtradb).

And we should add something that marks transactions from storage engines that
have not yet been updated with such support - so that such transactions can be
not applied in parallel to avoid replication failure.