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 Tee distribution provides the ptee program, a pure Perl emulation of the
standard GNU tool tee. It is designed to be a platform-independent
replacement for operating systems without a native tee program. As with tee,
it passes input received on STDIN through to STDOUT while also writing a copy
of the input to one or more files. By default, files will be overwritten.

Unlike tee, ptee does not support ignoring interrupts, as signal handling is
not sufficiently portable.

The Tee module provides a convenience function that may be used in place of
system() to redirect commands through ptee.