Including DStypes GaugeInc and GaugeAdd for tail plugin
New barometer plugin
Merge pull request #683 from tmtom/barometer2

New barometer plugin
fix dstype gauge values and expands the number of possible subtypes
Disable plugin multimeter in AIX
Merge pull request #673 from deferraz/master

Including DStypes GaugeInc and GaugeAdd for tail plugin
Merge pull request #684 from manuelluis/mlsr/aix-disable-multimeter

Disable plugin multimeter in AIX
Enforce JSON as the default format on a topic