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.


mysql-test/r/innodb.result:
  Applied innodb-5.1-ss1404 snapshot
  
  Revision r1404:
  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:
  Applied innodb-5.1-ss1404 snapshot
  
  Revision r1404:
  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.
storage/innobase/handler/ha_innodb.cc:
  Applied innodb-5.1-ss1404 snapshot
  
  Revision r1404:
  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.
storage/innobase/handler/ha_innodb.h:
  Applied innodb-5.1-ss1404 snapshot
  
  Revision r1404:
  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.
storage/innobase/os/os0file.c:
  Applied innodb-5.1-ss1404 snapshot
  
  Revision r1395:
  * 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().
  
  Approved by:	Heikki
  
  
  
  Revision r1391:
  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()
  
  Approved by:	Marko
storage/innobase/plug.in:
  Applied innodb-5.1-ss1404 snapshot
  
  Revision r1395:
  * 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().
  
  Approved by:	Heikki