[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:

  ded9eb3... coverage: Build gidl-bindings
  8e3f473... ci: Add .gitlab-ci.yml
  7ff37fa... ci: Add ubuntu:16.04 run with gcc
  7c8365c... ci: Add archlinux:latest run with gcc
  e68e926... ci: Add alpine:edge run with gcc
  69814e9... ci: Add fedora:rawhide run with clang
  54dd27a... Fedora rawhide is broken
  148da49... ci: Use Fedora 34 (broken DBus)
  1411cf9... Ubuntu devel is broken
  60a6cf1... Alpine edge is broken
  2b89e05... ci: Build manual as pdf and html
  d0c22ae... ci: Always deploy

Commits added to the branch:

  1133400... Properly use [Flags] feature for ModifierFlags and CCodeMod (*)
  4c27684... vala: Silently accept unsafe assignment of "0" literal to e (*)
  a81bc7a... vala: Correctly replace "in" expression in pre-/postconditi (*)
  73cd47c... parser: Improve partial classes support (*)
  b2ef0ed... Make more use of native GLib.Regex syntax (*)
  e222ccf... coverage: Build gidl-bindings
  77bd08c... ci: Add .gitlab-ci.yml
  ad53b43... ci: Add ubuntu:16.04 run with gcc
  723a680... ci: Add archlinux:latest run with gcc
  f006bba... ci: Add alpine:edge run with gcc
  881a4a0... ci: Add fedora:rawhide run with clang
  bd91196... Fedora rawhide is broken
  7431d5b... ci: Use Fedora 34 (broken DBus)
  54b95ed... Ubuntu devel is broken
  953f59a... Alpine edge is broken
  a1d3878... ci: Build manual as pdf and html
  7040ca9... ci: Always deploy

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