Merge polly.(none):/home/kaa/src/maint/bug28878/my41-bug28878

into  polly.(none):/home/kaa/src/maint/bug28878/my50-bug28878


mysql-test/r/innodb_mysql.result:
  Null merge.
mysql-test/t/innodb_mysql.test:
  Null merge.
sql/field.cc:
  Null merge.