[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:

  7290f15... coverage: Build gidl-bindings
  74e42a1... ci: Add .gitlab-ci.yml
  3a569a4... ci: Add ubuntu:16.04 run with gcc
  47b7b3d... ci: Add ubuntu:18.04 run with gcc
  47f2141... ci: Add fedora:latest run with clang
  e4118dd... ci: Add archlinux/base:latest run with gcc
  f2d5e2e... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  bdadb86... ci: Always deploy

Commits added to the branch:

  4878ac0... codegen: Add destroy of parameter in vfunc of delegate prop (*)
  67a85b8... tests: Extend "GenericAccessors" test to increase coverage (*)
  0368da3... coverage: Build gidl-bindings
  e4c3d21... ci: Add .gitlab-ci.yml
  a56cccf... ci: Add ubuntu:16.04 run with gcc
  2297776... ci: Add ubuntu:18.04 run with gcc
  89a7598... ci: Add fedora:latest run with clang
  19416b2... ci: Add archlinux/base:latest run with gcc
  17a20f6... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  d1c58e7... ci: Always deploy

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