Merge remote-tracking branch 'ispc/master'

Marius Cramer

2015-05-21 6b1fde7e9a450ae8e4835f7e8c2ba1f398e78c1f

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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"