Bill Hoffman authored Sep 06, 2017 and Brad King committed Sep 08, 2017

This commit splits out the reporting of labels and labels used for sub
projects. If a label is a sub project label it will not be included in
the label summary.  To implement this the commit creates
PrintLabelOrSubprojectSummary which is able to do the work of both
PrintLabelSummary and PrintSubprojectSummary avoiding code duplication.