Log message:
Bump the PKGREVISION for all packages which depend directly on perl,
to trigger/signal a rebuild for the transition 5.10.1 -> 5.12.1.

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=..."), minus the packages updated after
the perl package update.

sno@ was right after all, obache@ kindly asked and he@ led the
way. Thanks!

Log message:
The accessors pragma lets you create simple accessors at compile-time.
This saves you from writing them by hand, which tends to result in
cut-n-paste errors and a mess of duplicated code. It can also help you
reduce the ammount of unwanted direct-variable access that may creep
into your codebase when you're feeling lazy. accessors was designed with
laziness in mind.