Merge mysql.com:/home/ram/work/mysql-5.0-engines

  DBUG_ASSERT(fixed == 1);

  double time= args[0]->val_real();

  /*

    On 64-bit OSX pthread_cond_timedwait() waits forever

    if passed abstime time has already been exceeded by 

    the system time.

    When given a very short timeout (< 10 mcs) just return 

    immediately.

    We assume that the lines between this test and the call 

    to pthread_cond_timedwait() will be executed in less than 0.00001 sec.

  */

  if (time < 0.00001)

    return 0;

  set_timespec_nsec(abstime, (ulonglong)(time * ULL(1000000000)));

  pthread_cond_init(&cond, NULL);