if Parsers.ParserError has filename and line number, print it
throw exception if status.dat is not found
setUp method for parser doctest so we have a nagios.cfg to find status.dat
Merge pull request #89 from pall-valmundsson/parser-test-fix

Parser test fix
Merge pull request #88 from pall-valmundsson/ParserError-filename-line

if Parsers.ParserError has filename and line number, print it