#7 SNMP support

[Wes Hardaker]

The attached patch and 2 files contains support for monitoring
remote hosts via SNMP and then using that information in graphs,
etc. Though it is not ideal yet (being able to do formatting and
delta-calculations for counters, eg, isn't there) its a proof of
concept. I have a graph on my window that shows the load
average for both my local machine and another next to it that the
data is collected via SNMP.

[Wes Hardaker]

[Wes Hardaker]

[Wes Hardaker]

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Ohh... usage...

1) requires a setup and working snmp.conf file for net-snmp that has
authentication/etc information in it. With that in place:

2) something like the following should work:

text ... sensor=SNMP HOST="host.example.com" OID="sysUpTime.0"
interval=30000
graph ... sensor=SNMP HOST="host.example.com" OID="laLoadInt.1"
interval=10000

...

[Ryan Nickell]

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Added missing cpp file for patch.

[Ryan Nickell]

snmpsensor.cpp