NULL MERGE: this ChangeSet will be null merged into mysql-5.1

Fixes:

- Bug #26662: mysqld assertion when creating temporary (InnoDB) table on a tmpfs filesystem
  Fix by not open(2)ing with O_DIRECT but rather calling fcntl(2) to set
  this flag immediately after open(2)ing. This way an error caused by
  O_DIRECT not being supported can easily be ignored.
- Bug #23313: AUTO_INCREMENT=# not reported back for InnoDB tables
- Bug #21404: AUTO_INCREMENT value reset when Adding FKEY (or ALTER?)
  Report the current value of the AUTO_INCREMENT counter to MySQL.


innobase/configure.in:
  Apply innodb-5.0-ss1405 snapshot
  
  Revision r1396:
  branches/5.0: Merge r1395 from trunk:
  
  * Fix Bug#26662 by not open(2)ing with O_DIRECT but rather calling fcntl(2)
  to set this flag immediately after open(2)ing. This way an error caused by
  O_DIRECT not being supported can easily be ignored.
  
  * Add support for skipping the OS caching on Solaris by calling directio()
  instead of fcntl().
innobase/os/os0file.c:
  Apply innodb-5.0-ss1405 snapshot
  
  Revision r1394:
  branches/5.0: Merge r1391 from trunk:
  
  Merge the bodies of os_file_handle_error() and os_file_handle_error_no_exit()
  into a generic function which is called from both os_file_handle_error() and
  os_file_handle_error_no_exit()
  
  
  Revision r1396:
  branches/5.0: Merge r1395 from trunk:
  
  * Fix Bug#26662 by not open(2)ing with O_DIRECT but rather calling fcntl(2)
  to set this flag immediately after open(2)ing. This way an error caused by
  O_DIRECT not being supported can easily be ignored.
  
  * Add support for skipping the OS caching on Solaris by calling directio()
  instead of fcntl().
mysql-test/r/innodb.result:
  Apply innodb-5.0-ss1405 snapshot
  
  Revision r1405:
  branches/5.0: Merge r1404 from trunk:
  
  Report the current value of the AUTO_INCREMENT counter to MySQL.
  (Bug #23313, Bug #21404)
  
  ha_innobase::update_create_info(): New function, to report
  the auto_increment_value.
mysql-test/t/innodb.test:
  Apply innodb-5.0-ss1405 snapshot
  
  Revision r1405:
  branches/5.0: Merge r1404 from trunk:
  
  Report the current value of the AUTO_INCREMENT counter to MySQL.
  (Bug #23313, Bug #21404)
  
  ha_innobase::update_create_info(): New function, to report
  the auto_increment_value.
sql/ha_innodb.cc:
  Apply innodb-5.0-ss1405 snapshot
  
  Revision r1405:
  branches/5.0: Merge r1404 from trunk:
  
  Report the current value of the AUTO_INCREMENT counter to MySQL.
  (Bug #23313, Bug #21404)
  
  ha_innobase::update_create_info(): New function, to report
  the auto_increment_value.
sql/ha_innodb.h:
  Apply innodb-5.0-ss1405 snapshot
  
  Revision r1405:
  branches/5.0: Merge r1404 from trunk:
  
  Report the current value of the AUTO_INCREMENT counter to MySQL.
  (Bug #23313, Bug #21404)
  
  ha_innobase::update_create_info(): New function, to report
  the auto_increment_value.