[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:

  4b1768e... coverage: Build gidl-bindings
  34dec2c... ci: Add .gitlab-ci.yml
  a7f92ac... ci: Add ubuntu:16.04 run with gcc
  9cb398a... ci: Add ubuntu:18.04 run with gcc
  acd63e3... ci: Add fedora:latest run with clang
  d6f8aaa... ci: Add archlinux/base:latest run with gcc
  02cc011... ci: Always deploy

Commits added to the branch:

  83af5c8... gtksourceview-2.0: Fix iter parameter in SourceBuffer.backw (*)
  9ab99ed... glib-2.0: Add new symbols from 2.64 (*)
  7b2e66e... gtk+-*.0: Fix iter parameter of TextBuffer.backspace() (*)
  7d3290e... vala: Do not allow += for arrays with fixed length (*)
  ff3ec83... vala: Infer array length of inline allocated arrays for fie (*)
  2e62cf3... vala: Do not allow to .resize() on arrays with fixed length (*)
  c9e00a0... vala: Do not allow to change .length of arrays with fixed l (*)
  4e34272... vala: Improve error message for arrays as type arguments (*)
  10c72b2... coverage: Build gidl-bindings
  82b934f... ci: Add .gitlab-ci.yml
  361e4ec... ci: Add ubuntu:16.04 run with gcc
  677912c... ci: Add ubuntu:18.04 run with gcc
  5c89f72... ci: Add fedora:latest run with clang
  bf0d305... ci: Add archlinux/base:latest run with gcc
  a033e98... ci: Always deploy

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