mail-filter/spamassassin: new revision fixing bugs 590338 and 615856.

mail-filter/spamassassin: new revision fixing bugs 590338 and 615856.

The first fix in this revision adds a slot-operator dependency on
dev-lang/perl. This should force SpamAssassin to rebuild in response
to future major upgrades of perl (bug 615856).

The second fix includes a backported patch to support newer versions
of dev-perl/Net-DNS. This should avoid the problems experienced with
the URIDNSBL plugin (bug 590338).

Gentoo-Bug: 590338
Gentoo-Bug: 615856

Package-Manager: Portage-2.3.3, Repoman-2.3.1