ganglia/monitor-core — pull request #137 by satterly (2014-02-24 15:05:18+00:00)
Title: add incby(n,v) to ganglia scoreboard and change type to unsigned

add incby(n,v) to ganglia scoreboard for incrementing by a number

also, change the type from int to unsigned because overflow of
signed integers is undefined. This should not effect existing
metrics for ganglia agents because they are reset-on-read.

See http://stackoverflow.com/questions/18195715