[vala] (24 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:

  d40f732... coverage: Build gidl-bindings
  afe6f22... ci: Add .gitlab-ci.yml
  a50ac83... ci: Add ubuntu:16.04 run with gcc
  f4ee72c... ci: Add ubuntu:18.04 run with gcc
  71ffa7a... ci: Add fedora:latest run with clang
  4d1d7c4... ci: Add archlinux/base:latest run with gcc
  ff468db... ci: Always deploy

Commits added to the branch:

  a06892e... codegen: Make type-parameter properties readable (*)
  d14248f... vala: Add GenericType.dup/destroy fields (*)
  984c034... vala: Write value of constants/enums in fast-vapi if they a (*)
  47e0679... vala: Don't mark method as used on recursive usage of itsel (*)
  103da8b... gio-2.0: Use custom TaskReadyCallback delegate in Task.repo (*)
  efe38fd... g-i: Calculate size correctly, avoid use-after-free (*)
  ab71791... g-i: Avoid use of uninitialized "markup" warning (*)
  62c964d... g-i: Ignore flags like -mfpmath=sse, -msse or -msse2 (*)
  7c36778... gtk4,gtk4-unix-print: Update to 3.96.0+fbea677a (*)
  39331e2... vala: Support "unowned var" to declare local variables (*)
  417dd66... libvaladoc: Move gmodule-2.0 to Requires.private of pkg-con (*)
  0391ba9... vala: Add missing gmodule-2.0 to Requires.private of pkg-co (*)
  99c0e25... gstreamer: Update from 1.17.0+ git master (*)
  d3e66db... vapi: Update GIR-based bindings (*)
  3197d84... compiler: Add "--list-sources" options to output a list of  (*)
  42dca91... vala: Restore DestroysInstance behaviour for non-compact cl (*)
  6690ea0... vala: Improve check of delegate assignments and initializer (*)
  5047141... coverage: Build gidl-bindings
  95f923e... ci: Add .gitlab-ci.yml
  ff744fd... ci: Add ubuntu:16.04 run with gcc
  6f60c9c... ci: Add ubuntu:18.04 run with gcc
  6d16f19... ci: Add fedora:latest run with clang
  504c989... ci: Add archlinux/base:latest run with gcc
  8428179... ci: Always deploy

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