Bug#869612: perl: add Breaks on older versions of intltool

[Niko Tyni]

Package: perl
Version: 5.26.0-4
User: debian-perl at lists.debian.org
Usertags: perl-5.26-transition

As seen in #826471 the perl 5.26 transition broke
/usr/bin/intltool-update. This was fixed in intltool_0.51.0-4, so
perl-base should Break older versions to make sure partial upgrades
don't end up with the broken combination.
-- 
Niko Tyni   ntyni at debian.org