Merge branch 'thh-parsedb' into pu

Merge branch 'thh-parsedb' into pu

* thh-parsedb:
  Add some input validation.
  Add documentation to parsedb.pl.
  Handle more than one entitiy in From: etc.
  Let gatherstats read its data from DBTableParse.
  Add decoding and parsing of From: etc.
  Create a database table with parsed raw data.
  Make GetTimePeriod() and others accept days.

# Conflicts:
#	bin/gatherstats.pl