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 Regexp::MatchContext provides replacements for
the regexp related variables $PREMATCH, $MATCH, and $POSTMATCH in
a way that only impacts the performance of matches that you specify.
These three variables are only set if the most recently matched
regex contained the special (non-standard) meta- flag: (?p).
