bgutil: daemon enhancements (#197)
bgutil: daemon enhancements (#197)

* bgutil daemon: can SIGINT the process now

* bgutil daemon: better logging message

* bgutil daemon: Add line number in message log

criteo/biggraphite,criteo/biggraphite,criteo/biggraphite,Thib17/biggraphite,Thib17/biggraphite,dpanth3r/biggraphite,iksaif/biggraphite,Thib17/biggraphite,iksaif/biggraphite,iksaif/biggraphite,criteo/biggraphite,iksaif/biggraphite,Thib17/biggraphite