HAASLIB

Add specific logger handlers so that INFO is output to stdout and DEBUG to a pipeliner.log file in the checkpoints directory.

Pipeliner: Add Message() class as an alternative to Command() that simply outputs the message provided to the logger. Used so the message is output at the relevant step when running the Pipeliner, and can serve to flank a group of commands to indicate start/end.

Merge pull request #1 from GeorgescuC/master

Write cmdstr to the checkpoint file for debugging/history.

update