mysql-test/suite/funcs_1/r/is_columns_is.result:
  Update after change of comment length
mysql-test/suite/funcs_1/r/is_engines.result:
  Update after change of comment length
mysql-test/suite/innodb_plugin/t/disabled.def:
  Disable a test that gives valgrind warnings for xtradb
mysql-test/suite/innodb_plugin/t/innodb_bug52745.test:
  Test requires persian collation