bandwidthd for 2.2 on nanoBSD

I installed bandwidthd on a 2.2 nanoBSD Alix2D13. The new path to the executable has an extra "/local" in it, and it needs an LD_LIBRARY_PATH to know where to find some of its libraries.
With this, it installs, runs and comes up again after a reboot.
These changes should all be backward-compatible and make no difference to what happens when installed on older 1.2 2.0 and 2.1 series systems.
bandwidthd version bump to 0.4
bandwidthd version bump to 0.4
bandwidthd version bump to 0.4
bandwidthd version bump to 0.4
Merge pull request #651 from phil-davis/patch-1