partially cherry-pick from mysql/5.6.
No test case (mysql/5.6 test case is useless, the correct
test case uses too much memory)

commit e061985813db54948f99892d89f7e076242473a5
Author:  <Dao-Gang.Qu@sun.com>
Date:   Tue Jun 1 15:02:22 2010 +0800

    Bug #49931          Incorrect type in read_log_event error
    Bug #49932          mysqlbinlog max_allowed_packet hard coded to 1GB

If somehow the COMMIT or XID event in an event group was missing, the code in
parallel replication to handle this was not sufficient, leading to server
deadlock.

InnoDB transaction lock printout.

MDEV-7458: Deadlock in parallel replication can allow following transaction to start replicating too early

In parallel replication, don't rollback inside ha_commit_trans() in case of
error.

The rollback will be done later, but the parallel replication code needs to
run unmark_start_commit() before the rollback to properly control the
sequencing of transactions.

I did not manage to come up with a reliable automatic test case for this, but
I tested it manually.

(Without this, it happened for me that realpath() failed returning
undef for the default vardir. This in turn caused mysql-test-run.pl to
delete the source mysql-test/ directory.)

Backport from 10.1, it's not nice to get one's source directory nuked
by a rouge mysql-test-run.

waits and total wait time.

  Handle longjmp's raised during json processing.
modified:
  storage/connect/global.h
  storage/connect/ha_connect.cc
  storage/connect/json.cpp
  storage/connect/jsonudf.cpp

- Fix wrong references to the suppressed g->Trace variables.
modified:
  storage/connect/global.h
  storage/connect/plugutil.c
  storage/connect/tabjson.cpp
  storage/connect/tabodbc.cpp

Don't binlog mariadb setup sql statements:
* use "mysql_install_db --disable-log-bin"
* use "mysqld --bootstrap --disable-log-bin"
* use "SET sql_log_bin=0"

don't return from DROP TRIGGER IF NOT EXISTS on the slave side
early when the trigger couldn't be read

cherry-pick the upstream fix

commit d4ba10184cd7bde9c31c610e664ecd0c93605c46
Author: Sujatha Sivakumar <sujatha.sivakumar@oracle.com>
Date:   Wed Jul 2 11:34:11 2014 +0530

    Bug#17453826:ASSERTION ERROR WHEN SETTING FUTURE BINLOG
    FILE/POS WITH SEMISYNC

    Problem:
    ========
    When DMLs are in progress on the master stopping a slave and
    setting ahead binlog name/pos will cause an assert on the
    master.
    ...

Item_func::print() prints itself as name + "(" + arguments + ")".
Normally that works, but Item_func_interval internally implements its
arguments as one single Item_row. Item_row prints itself as
"(" + values + ")". As a result, "INTERVAL(1,2)" was being printed
as "INTERVAL((1,2))". Fixed with a custom Item_func_interval::print().

Removed 'galera-sst-mode' option from mysqldump as its no longer needed.

only activate it on MYSQL_MAINTAINER_MODE=ERRON

* oqgraph is in a separate package in 10.0
* sphinx udf is in the ha_sphinx.so

Enable subquery materialization for non-SELECT queries with a SELECT part

Redefine FT_KEYPART in a way that it does not conflict with Hash Join.
Hash join stores field->field_index in KEYUSE::keypart, so we must
use a value of FT_KEYPART that's greater than MAX_FIELDS.

The order of initialisation during server startup was incorrect. The slave
threads were started before the parallel replication worker thread pool was
initialised, allowing a race where uninitialised data could be accessed.

modified:
  storage/connect/jsonudf.cpp
  storage/connect/tabutil.h

modified:
  storage/connect/json.cpp
  storage/connect/jsonudf.cpp
  storage/connect/tabjson.cpp

- CntReadNext: Enable EvalColumns for longjmp
modified:
  storage/connect/connect.cc

Added test case. No actual bug found.