git-tag-release: Don't fail if BUILD is emptyv1.4.4
commit8035a3899195bce2671e07a4498687e723fe6e59
authorOlly Betts <olly@survex.com>
Mon, 24 Apr 2017 02:17:24 +0000 (24 14:17 +1200)
committerOlly Betts <olly@survex.com>
Mon, 24 Apr 2017 02:18:56 +0000 (24 14:18 +1200)
tree95b6b9f555b9518e240a9a1ee9363fcea6f39755
parentf10049d9de3044257bb8e776759f2cb251f9087b
git-tag-release: Don't fail if BUILD is empty

Now we default to using local autotools if new enough, BUILD may
be empty.

(cherry picked from commit 7bc7234adae959fff757b40ab9a72105f6e057e8)
xapian-maintainer-tools/git-tag-release