[vala] (15 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:

  eda9da8... coverage: Build gidl-bindings
  6247c72... ci: Add .gitlab-ci.yml
  9eab292... ci: Add ubuntu:16.04 run with gcc
  e2718d5... ci: Add ubuntu:18.04 run with gcc
  acacc6a... ci: Add fedora:latest run with clang
  ffab977... ci: Add archlinux/base:latest run with gcc
  06b501b... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  e9fc5af... ci: Always deploy

Commits added to the branch:

  8af4e49... tests: Add "invalid address-of" test to increase coverage (*)
  30008bf... vala: scope "owner" of constructor/destructor subroutines i (*)
  626d3e6... gidl/girparser: Creation methods must not be marked as stat (*)
  96635dd... vala: Allow SemanticAnalyzer.get_this_type() to handle more (*)
  5e8005f... vala: Unify "this_parameter" creation using SemanticAnalyze (*)
  49a6d47... vala: Check "this_parameter" if available (*)
  552467a... codegen: Use result of CCodeBaseModule.get_this_type() (*)
  12ad853... coverage: Build gidl-bindings
  d904b6e... ci: Add .gitlab-ci.yml
  7eb23c4... ci: Add ubuntu:16.04 run with gcc
  6d0668a... ci: Add ubuntu:18.04 run with gcc
  8bd5aac... ci: Add fedora:latest run with clang
  96a5870... ci: Add archlinux/base:latest run with gcc
  2bca2b0... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  66f41b2... ci: Always deploy

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