[vala] (16 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:

  3ea3790... coverage: Build gidl-bindings
  5778f5c... ci: Add .gitlab-ci.yml
  17ffae2... ci: Add ubuntu:16.04 run with gcc
  1c76d88... ci: Add archlinux:latest run with gcc
  85d6b9f... ci: Add alpine:edge run with gcc
  112b3ae... ci: Add fedora:rawhide run with clang
  f4146de... Fedora rawhide is broken
  b566fd7... ci: Use Fedora 34 (broken DBus)
  7c20429... Ubuntu devel is broken
  bb95865... Alpine edge is broken
  1c1f7ed... ci: Build manual as pdf and html
  6a64ac7... ci: Always deploy

Commits added to the branch:

  0a59efb... vala: Fix signals with generic return (*)
  6783dba... build: Add "test-update" which passed UPDATE_EXPECTED=1 to  (*)
  3ec2760... webkit2gtk-*.0: Update to 2.35.1 (*)
  a44117b... tests: Rename colliding test cases to avoid conflicts (*)
  3b05b92... coverage: Build gidl-bindings
  c30b37b... ci: Add .gitlab-ci.yml
  5b61895... ci: Add ubuntu:16.04 run with gcc
  4897af7... ci: Add archlinux:latest run with gcc
  d8ca134... ci: Add alpine:edge run with gcc
  5546776... ci: Add fedora:rawhide run with clang
  b1b202f... Fedora rawhide is broken
  2f4e6ce... ci: Use Fedora 34 (broken DBus)
  114aa5c... Ubuntu devel is broken
  a0432cb... Alpine edge is broken
  0c0f921... ci: Build manual as pdf and html
  fdaef37... ci: Always deploy

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