[vala] (17 commits) Non-fast-forward update to branch wip/ci

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/ci' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  acc8789... ci: Add .gitlab-ci.yml
  865e233... ci: Always deploy
  8ac0a62... ci: Add ubuntu lts 16.04 run with gcc
  2d56aeb... ci: Add ubuntu lts 14.04 run with gcc
  8e44423... ci: Build and deploy API documentation
  2d4f3aa... Use Fedora 29 -- https://bugzilla.redhat.com/show_bug.cgi?i

Commits added to the branch:

  2bd25b6... gio-2.0: SocketAddress.from_native() is a factory method no (*)
  ea77a74... Mark defined constructors of abstract classes as protected (*)
  fac2cec... parser: Implicit creation method of abstract classes must b (*)
  5a5da40... vte-2.90: Mark as deprecated, it was replaced by vte-2.91 (*)
  f3b5ce8... glib-2.0: Add string.validate_len() since 2.60 (*)
  a1f23d3... libvaladoc: Don't try to create a Content.ListItem when the (*)
  cbada43... libgvc: Some additions and ownership/return-type fixes (*)
  d571747... gstreamer: Update from 1.15.2+ git master (*)
  a6c1648... gtk4: Update to 3.94.0+f14d998c (*)
  499fdf7... vapi: Update GIR-based bindings (*)
  cc9ab83... Release 0.44.1 (*)
  b3cff90... ci: Add .gitlab-ci.yml
  2058e42... ci: Always deploy
  5a866fd... ci: Add ubuntu lts 16.04 run with gcc
  be62dd1... ci: Add ubuntu lts 14.04 run with gcc
  ff185f4... ci: Build and deploy API documentation
  c646bbf... Use Fedora 29 -- https://bugzilla.redhat.com/show_bug.cgi?i

(*) This commit already existed in another branch; no separate mail sent