MDEV-26: Global transaction ID. First alpha release.

Merge of 10.0-mdev26 feature tree into 10.0-base.

Global transaction ID is prepended to each event group in the binlog.

Slave connect can request to start from GTID position instead of specifying
file name/offset of master binlog. This facilitates easy switch to a new
master.

Slave GTID state is stored in a table mysql.rpl_slave_state, which can be
InnoDB to get crash-safe slave state.

GTID includes a replication domain ID, allowing to keep track of distinct
positions for each of multiple masters.

1 files changed, 2 insertions, 0 deletions

diff --git a/sql/table.h b/sql/table.h
index fa5bd83371a..2841b854da1 100644
--- a/sql/table.h
+++ b/sql/table.h
@@ -493,6 +493,8 @@ typedef struct st_table_field_def
 {
   uint count;
   const TABLE_FIELD_TYPE *field;
+  uint primary_key_parts;
+  const uint *primary_key_columns;
 } TABLE_FIELD_DEF;