Fixed bug #66827 Session raises E_NOTICE when session name variable is array
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  Fixed bug #66827 Session raises E_NOTICE when session name variable is array
Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  Fixed bug #66827 Session raises E_NOTICE when session name variable is array