[vala] (11 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:

  5c0e8b2... ci: Add .gitlab-ci.yml
  e99672d... ci: Always deploy
  4e751bb... ci: Add ubuntu lts 16.04 run with gcc
  3868fa7... ci: Build and deploy API documentation
  9eba9e9... Use Fedora 29 -- https://bugzilla.redhat.com/show_bug.cgi?i

Commits added to the branch:

  5966203... glib-2.0: Bind strcmp0 as GLib.CompareFunc<string?> (*)
  8f86bb7... xtst: Fix signature of XTest.fake_relative_motion_event() (*)
  b35b0b1... vala: Add Symbol.is_extern and use/set is accordingly (*)
  70c4b16... codegen: Don't write declaration of extern symbols with giv (*)
  f8c7e26... codegen: Assign GValue result of function calls to temp-var (*)
  759d45d... ci: Add .gitlab-ci.yml
  7782269... ci: Always deploy
  ed2ac8f... ci: Add ubuntu lts 16.04 run with gcc
  af4ac70... ci: Build and deploy API documentation
  d706eaf... Use Fedora 29 -- https://bugzilla.redhat.com/show_bug.cgi?i
  732e715... ci: Add fedora rawhide run with gcc

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