mail filters), the /usr/bin/perl dummy fails since it assumes that the
installed package could be reached via the existing $PATH. Also,
since we are obviously looking for a perl installed by a package, we
should make sure that at least the default package bindir is being
searched.
/usr/src has to carefully watch the Perl port to keep this in sync.
But this is the only way I am allowed to fix the mozzila build
(and other USE_PERL5 ports).
