Module-Build 0.42_15

on Perl CPAN

Honor environmental variables when using TAP::Harness directly [Leon Timmermans]

Reintroduce some level of perl 5.6 support [Leon Timmermans]
Note that this comes with no guarantees or commitment

Allow Devel::Cover usage with TAP::Harness [Philipp Gortan]

Remove "running under some shell" [Shoichi Kaji]

Fix cookbook - code was missing trailing ` [Matthew Horsfall]