Initial work to support multiple monitoring agents including Munin, Check_MK, and NRPE at the least.
Rename "pvcd" to "pvcnoded", and "pvc-api" to "pvcapid" so names for the daemons are fully consistent. Update the names of the configuration files as well to match this new formatting. References #79
Rename pvc-daemon to pvc-daemon-node and pvc-api to pvc-daemon-api. Closes #79