[vala] (22 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:

  cb03723... coverage: Build gidl-bindings
  bd685b3... ci: Add .gitlab-ci.yml
  13343eb... ci: Add ubuntu:16.04 run with gcc
  4ca29de... ci: Add ubuntu:18.04 run with gcc
  0c6a024... ci: Add fedora:rawhide run with clang
  37793df... ci: Add archlinux/base:latest run with gcc
  99bbd4f... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  7666007... ci: Always deploy

Commits added to the branch:

  14cf269... tests: Add "unique namespace" test (*)
  8f9f2f1... codegen: Properly compare string if binary-expression conta (*)
  1e4228e... testrunner: Add more -Werror=* flags (*)
  c789ec5... vala: Handle parameter initializer without value-type (*)
  d6c14db... webkit2gtk-4.0: Update to 2.29.3 (*)
  35e5a2e... gtk4: Update to 3.98.5+191e0e8d (*)
  c19bd47... gstreamer: Update from 1.17.2+ git master (*)
  9554bc0... vapi: Update GIR-based bindings (*)
  9f1d443... codegen: Make use of CCode.cname for label name of CatchCla (*)
  dc7a412... vala: Remove some public API from expressions and statement (*)
  52b2403... vapi: Disable deprecation warnings when checking bindings (*)
  46d5fb8... codegen: Inline allocated and constant arrays are never NUL (*)
  9d5e431... testrunner: Add "-Werror=tautological-pointer-compare" flag (*)
  5ae9d6b... tests: Add "pre/post-increment" tests to increase coverage (*)
  1aea6bc... coverage: Build gidl-bindings
  2ccf936... ci: Add .gitlab-ci.yml
  f02feb0... ci: Add ubuntu:16.04 run with gcc
  82a926f... ci: Add ubuntu:18.04 run with gcc
  8979239... ci: Add fedora:rawhide run with clang
  b07a813... ci: Add archlinux/base:latest run with gcc
  aa9b777... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  5ab8172... ci: Always deploy

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