[vala] (4 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:

  a6f726f... ci: Add .gitlab-ci.yml

Commits added to the branch:

  320566e... tests: Add invalid "switch" tests to increase coverage (*)
  0615a4d... tests: Add and improve "foreach iterator" tests to increase (*)
  ef6d8e6... vala: Add missing re-check guards for Do/For/WhileStatement (*)
  6409cc9... ci: Add .gitlab-ci.yml

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