Merge branch 'master' into 'master'

Marius Cramer

2015-09-17 b3ada5210398434515ef9fa6acfd223b501ca495

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check process hhvm_{SYSTEM_USER} with pidfile /var/run/hhvm/hhvm_{SYSTEM_USER}.pid 
   start program = "/etc/init.d/hhvm_{SYSTEM_USER} restart" 
   stop  program = "/etc/init.d/hhvm_{SYSTEM_USER} stop"