Shell script based testing of the parser.

The current test setup seem to have fallen behind and it isn't obvious to me how to fix it. So, here's an idea for a new test setup. This setup is based on a "test driver" and shell scripts and it resembles the SenTestingKit based setup that I submitted in another pull request. See them both as requests for comments.

The driver parserlogger expects its first argument to be a CSV string.
parserlogger (or a sibling) should also be able to read from file to
test that branch of the code too.

Writes test output in source dir for parserlogger target.