[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:

  a77e921... coverage: Build gidl-bindings
  ce2b38c... ci: Add .gitlab-ci.yml
  03df452... ci: Add ubuntu:16.04 run with gcc
  4328f13... ci: Add ubuntu:18.04 run with gcc
  47841f7... ci: Add fedora:rawhide run with clang
  91dfbbc... ci: Add archlinux/base:latest run with gcc
  df8df70... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  5a88aba... ci: Add alpine:edge run with gcc
  efd4a6b... ci: Always deploy

Commits added to the branch:

  bdc95e7... codegen: The actual struct size is required for calloc (POS (*)
  b675390... poppler-glib: Update to 20.09.0 (*)
  b3b736e... gstreamer: Update from 1.18.0+ git master (*)
  039d2bc... vapi: Update GIR-based bindings (*)
  b32985e... Release 0.50.0 (*)
  34dae68... gtk4: Don't skip LayoutManager.create_layout_child() (*)
  1962fa9... gtk4: Update to 3.99.1+9afdb41b (*)
  fec5844... gtk4: Update to 3.99.1+35c3a60c (*)
  69cc119... vala: Improve parsing of with-statement and allow it as emb (*)
  55294d6... parser: Allow to begin expression with statement keyword (*)
  cf5faa7... gtk4: Update to 3.99.1+ee75bae8 (*)
  14dd244... webkit2gtk-4.0: Update to 2.30.1 (*)
  b277482... vala: Prioritize the usage of an existing with-variable ins (*)
  72a6054... vala: Recognize previously inserted implicit access to with (*)
  07057c8... codegen: Don't falsly use g_return_val_if_fail() for async  (*)
  282716a... coverage: Build gidl-bindings
  2ed7e07... ci: Add .gitlab-ci.yml
  4ba4ca5... ci: Add ubuntu:16.04 run with gcc
  26244f0... ci: Add ubuntu:18.04 run with gcc
  eb47cf6... ci: Add fedora:rawhide run with clang
  6b7c1da... ci: Add archlinux/base:latest run with gcc
  ed57573... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  4b2eb1e... ci: Add alpine:edge run with gcc
  9d8360b... ci: Always deploy

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