[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:

  1d88555... coverage: Build gidl-bindings
  b8da9a6... ci: Add .gitlab-ci.yml
  015a6e7... ci: Add ubuntu:16.04 run with gcc
  d4b046a... ci: Add archlinux:latest run with gcc
  c5441a6... ci: Add alpine:edge run with gcc
  fa00cce... ci: Add fedora:rawhide run with clang
  29a0c28... Fedora rawhide is broken
  646cf76... ci: Use Fedora 34 (broken DBus)
  d0c1119... Ubuntu devel is broken
  1f5ed4c... Alpine edge is broken
  ea73d15... ci: Build manual as pdf and html
  57a2395... ci: Always deploy

Commits added to the branch:

  0b954dc... codegen: Clear existing length values when revisiting a sli (*)
  333912f... tests: Skip runtime of array length type test on "32-bit" (*)
  265a5cd... vapi: Update GIR-based bindings (*)
  e73a038... Sync NEWS from 0.54 (*)
  590e041... codegen: Generated SimpleType structs don't have a type id (*)
  305d978... coverage: Build gidl-bindings
  8d540cd... ci: Add .gitlab-ci.yml
  e17ea49... ci: Add ubuntu:16.04 run with gcc
  6513c6c... ci: Add archlinux:latest run with gcc
  68275e5... ci: Add alpine:edge run with gcc
  cc3426d... ci: Add fedora:rawhide run with clang
  65ac0dd... Fedora rawhide is broken
  eb4317c... ci: Use Fedora 34 (broken DBus)
  9c68a3a... Ubuntu devel is broken
  4ec654d... Alpine edge is broken
  fa9906c... ci: Build manual as pdf and html
  608f636... ci: Always deploy

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