From: David Bremner <david@tethera.net>
Date: Wed, 6 Mar 2019 13:18:32 +0000 (-0400)
Subject: travis: switch to xenial build env
X-Git-Tag: archive/debian/0.28.4-1~4
X-Git-Url: https://git.cworth.org/git?a=commitdiff_plain;h=35addc95aef546db8fee90a181518fedd50148cd;hp=35addc95aef546db8fee90a181518fedd50148cd;p=notmuch

travis: switch to xenial build env

In principle we'd like everything to work with ancient versions. In
practice someone needs drive that effort.
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