Created single file harvester for checking if a single file has had
data appended to it.  Also updated the test driver template.
Fixed single file harvester to not seek.  Also added initial un-tested
sorting directory poller.
Added sorting directory harvester which sorts by integer rather than
ascii sort.
temp and conductivity were swapped
fixed 2 unit tests for the 75 (bep and rsn)
Merge branch 'master' into cgldr