Update upstream source from tag 'upstream/3.6.4'
authorGert Wollny <gewo@debian.org>
Sat, 1 Dec 2018 18:54:12 +0000 (19:54 +0100)
committerGert Wollny <gewo@debian.org>
Sat, 1 Dec 2018 18:54:12 +0000 (19:54 +0100)
Update to upstream version '3.6.4'
with Debian dir ddd7356720e988affbbb080b064f304edb2e2a1b


Trivial merge