Can we make the dependencies a little more strict?

["Joe Emenaker" <jemenake@genesiscom.com>]

Okay, here's the deal: I've got perl, mysql, perl-dbi, and mysql-dbd all
loaded. The perl-dbi stuff is very dependent upon the build of perl (to the
point where I suspect that a rebuild of perl will break DBI unless it, too,
is rebuilt in the context of the new perl binary). The same seems to hold
true for the mysql-dbd libraries and mysql.

It seems we need a way for a package like perl-dbi to say "don't let perl
get updated unless I get updated, too". Do we have that already and nobody's
using it, or what?

- Joe