Allowing TriBITS project and package to have same name and dir (TriBiTS #43)

With this change, the base TriBITS project is changed from 'TriBITSProj' to
'TriBITS'.  I have yet to check that there is only one package but I can add
those tests later.

This will open the door for allowing individual TriBITS packages to be
configured as complete TriBITS projects.

For more details, see TriBITS issue #43.