to trigger/signal a rebuild for the transition 5.8.8 -> 5.10.0.
The list of packages is computed by finding all packages which end
up having either of PERL5_USE_PACKLIST, BUILDLINK_API_DEPENDS.perl,
or PERL5_PACKLIST defined in their make setup (tested via
"make show-vars VARNAMES=...").
Packages Collection.
The Perl 5 module Devel::Gladiator iterate's Perl's internal memory
structures and can be used to enumerate all the currently live SVs.
This can be used to hunt leaks and to profile memory usage