Logout for all providers on system logout in HybridAuth module.

System version 0.226
modules:
Blogs 0.032
Comments 0.003
Cron 0.004
HybridAuth 2.1.1-cs13
OAuth2 0.011
Static_pages 0.024
plugins:
Admin_default_theme 0.001
TinyMCE 3.5.8-cs4