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=...").
IO::Capture defines an abstract base class that can be used to create
any number of useful sub-classes that capture output being sent on a
filehandle such as STDOUT or STDERR. Several modules come with the
distribution that define sub-classes of IO::Capture to do just that,
i.e., capture STDOUT and STDERR.
