Allow the creation and parsing of a config file

This allows user to sanely have a configuration file for
use with redoflacs.  The configuration file is pretty stable
and will make the transition between updates MUCH easier

Small fixes to and changes to the configuration
Implemented 'prepend_zero' option

This allows users to specify whether they want to
prepend a zero in front of singular TRACKNUMBERs or
TRACKTOTALs.  This is enabled in the configuration file