Strict session
Strict session. Detect session id collision
fix crash, enable session_id and fix test
Merge branch 'pr368' into PHP-5.5

* pr368:
  fix crash, enable session_id and fix test
  Strict session. Detect session id collision
  Strict session
add news about session fix
Merge branch 'PHP-5.5'

* PHP-5.5:
  add news about session fix
  fix crash, enable session_id and fix test
  Strict session. Detect session id collision
  Strict session
add news about session fix
Merge branch 'PHP-5.5'

* PHP-5.5:
  add news about session fix