Various updates

These updates were required to address issue #49:

* Changed the source_re definition to include capitalization of Cannot.

* Added the root directory to the set of directories searched for GCOV files.
  This is necessary to correctly capture data for symbolic paths.

* Eliminated non-code lines from the text summary.  This might make this
  summary more verbose, but it makes it more accurate for the user.
Updating baseline with strippped data.
Removing old comparison logic.