[vala] (10 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:

  c790cf1... meson: Add initial build support
  f77ab08... meson: Allow static builds
  ebec22b... meson: Compile everything with stricter cflags
  44e9a00... WIP meson: Add tests
  4197364... WIP meson: Add internal-api-docs
  2f968be... Pass LD_LIBRARY_PATH as "env" where needed
  e7ac879... Broken evaluation of "Requires.private: gmodule-no-export-2
  31363c1... WIP meson: Add meson-bootstrap.sh

Commits added to the branch:

  321cd1b... coverage: Build gidl-bindings
  c0b6141... ci: Add .gitlab-ci.yml
  3919823... ci: Add ubuntu:16.04 run with gcc
  0dde245... ci: Add archlinux:latest run with gcc
  c0a5593... ci: Add alpine:edge run with gcc
  3bcc589... ci: Add fedora:rawhide run with clang
  37bd7e3... Ubuntu devel is broken
  dde030a... ci: Use Fedora 34 (broken DBus)
  e36bf51... ci: Build manual as pdf and html
  4b90421... ci: Always deploy