message: [deb] Depend on libssl 1.0.
  Debian 9 updates libssl-dev to 1.1, while 1.0 version is still available
  with the name libssl1.0-dev. Since Qt library still depends on libssl 1.0,
  we have to avoid linking two version of libssl by depending on libssl 1.0.
diff: @@ -4,7 +4,7 @@ Priority: extra
  Maintainer: m.eik michalke <meik.michalke@hhu.de>
  Build-Depends:
  debhelper (>= 7),
  - libssl-dev,
  + libssl1.0-dev | libssl-dev (<< 1.1),
  libcurl4-openssl-dev,
  libsqlite3-dev,
  intltool,
  