Merge a change from MySQL:

  ------------------------------------------------------------
  revno: 2709.20.31
  committer: Timothy Smith <timothy.smith@sun.com>
  branch nick: 51
  timestamp: Fri 2008-12-19 01:28:51 +0100
  message:
    Disable part of innodb-autoinc.test, because the MySQL server asserts when
    compiled --with-debug, due to bug 39828, "autoinc wraps around when offset and
    increment > 1".  This change should be reverted when that bug is fixed (and a
    a few other minor changes to the test as described in comments).
  modified:
    mysql-test/r/innodb-autoinc.result
    mysql-test/t/innodb-autoinc.test