Merge tag 'upstream/5.5.57' into ubuntu-14.04

Upstream version 5.5.57 # gpg: Signature made su 23. heinäkuuta 2017 23.35.34 EEST # gpg: using RSA key BED8449FCEE8DA88 # gpg: Good signature from "Otto Kekäläinen <otto@seravo.fi>" [full] # gpg: aka "Otto Kekäläinen <otto@kekalainen.net>" [full] # gpg: aka "Otto Kekäläinen <otto@fsfe.org>" [full] # gpg: aka "Otto Kekäläinen <otto@linux.com>" [full] # gpg: aka "Otto Kekäläinen <otto.kekalainen@seravo.fi>" [full] # gpg: aka "Otto Kekäläinen <otto@mariadb.org>" [undefined] # gpg: aka "Otto Kekäläinen <otto@debian.org>" [undefined] # gpg: aka "Otto Kekäläinen <otto@sange.fi>" [full]

Merge tag 'upstream/5.5.57' into ubuntu-14.04
Upstream version 5.5.57 # gpg: Signature made su 23. heinäkuuta 2017 23.35.34 EEST # gpg: using RSA key BED8449FCEE8DA88 # gpg: Good signature from "Otto Kekäläinen <otto@seravo.fi>" [full] # gpg: aka "Otto Kekäläinen <otto@kekalainen.net>" [full] # gpg: aka "Otto Kekäläinen <otto@fsfe.org>" [full] # gpg: aka "Otto Kekäläinen <otto@linux.com>" [full] # gpg: aka "Otto Kekäläinen <otto.kekalainen@seravo.fi>" [full] # gpg: aka "Otto Kekäläinen <otto@mariadb.org>" [undefined] # gpg: aka "Otto Kekäläinen <otto@debian.org>" [undefined] # gpg: aka "Otto Kekäläinen <otto@sange.fi>" [full]
dd1c1c1b · Otto Kekäläinen · fb3d7b9e · 69b6b895 · dd1c1c1b · dd1c1c1b
Commit dd1c1c1b authored Jul 23, 2017 by Otto Kekäläinen
--- a/sql/sql_yacc.h
+++ b/sql/sql_yacc.h
--- a/sql/sys_vars.cc
+++ b/sql/sys_vars.cc
--- a/sql/threadpool_unix.cc
+++ b/sql/threadpool_unix.cc
--- a/sql/uniques.cc
+++ b/sql/uniques.cc
--- a/storage/archive/ha_archive.cc
+++ b/storage/archive/ha_archive.cc
--- a/storage/innobase/buf/buf0buf.c
+++ b/storage/innobase/buf/buf0buf.c
--- a/storage/maria/ma_check.c
+++ b/storage/maria/ma_check.c
--- a/storage/maria/ma_loghandler.c
+++ b/storage/maria/ma_loghandler.c
--- a/storage/maria/ma_pagecache.c
+++ b/storage/maria/ma_pagecache.c
--- a/storage/maria/ma_recovery.c
+++ b/storage/maria/ma_recovery.c
--- a/storage/myisam/mi_check.c
+++ b/storage/myisam/mi_check.c
--- a/storage/myisam/mysql-test/storage_engine/parts/disabled.def
+++ b/storage/myisam/mysql-test/storage_engine/parts/disabled.def
--- a/storage/xtradb/btr/btr0btr.c
+++ b/storage/xtradb/btr/btr0btr.c
--- a/storage/xtradb/buf/buf0buf.c
+++ b/storage/xtradb/buf/buf0buf.c
--- a/storage/xtradb/dict/dict0crea.c
+++ b/storage/xtradb/dict/dict0crea.c
--- a/storage/xtradb/fsp/fsp0fsp.c
+++ b/storage/xtradb/fsp/fsp0fsp.c
--- a/storage/xtradb/handler/i_s.cc
+++ b/storage/xtradb/handler/i_s.cc
--- a/storage/xtradb/include/btr0cur.h
+++ b/storage/xtradb/include/btr0cur.h
--- a/storage/xtradb/include/btr0sea.h
+++ b/storage/xtradb/include/btr0sea.h
--- a/storage/xtradb/include/buf0buddy.ic
+++ b/storage/xtradb/include/buf0buddy.ic