[vala] (18 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:

  65f6c00... coverage: Build gidl-bindings
  3ac8b2c... ci: Add .gitlab-ci.yml
  b607847... ci: Add ubuntu:16.04 run with gcc
  e920a9b... ci: Add ubuntu:18.04 run with gcc
  9fd77f1... ci: Add fedora:latest run with clang
  31b3315... ci: Add archlinux/base:latest run with gcc
  9ac2ab4... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  4838a60... ci: Always deploy

Commits added to the branch:

  8d3394d... vala: Use error() instead of Report.error() inside of CodeC (*)
  ccf932f... valadoc: Create and register current Vala.CodeContext prope (*)
  bc8bf47... vala: Accept enum-values as length for inline allocated arr (*)
  11b0fec... posix: Add pathconf and fpathconf bindings (*)
  27b727b... vala: Improve copy of required attributes from delegate to  (*)
  886e5ff... vala: Inherit lambda parameter attributes from delegate (*)
  d33e9fb... codegen: Use correctly typed array-length variable for prop (*)
  76ba3c3... codegen: Use correctly typed array-length variable for dele (*)
  2684574... codegen: Inherit "array_length_type" from (base-/base-inter (*)
  5a97fa5... codegen: Improve handling of "array_length_type" attribute (*)
  2639ef4... coverage: Build gidl-bindings
  da08487... ci: Add .gitlab-ci.yml
  46dc3e8... ci: Add ubuntu:16.04 run with gcc
  2d72ee3... ci: Add ubuntu:18.04 run with gcc
  47623b7... ci: Add fedora:latest run with clang
  0f14f84... ci: Add archlinux/base:latest run with gcc
  2996f9e... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  c38b510... ci: Always deploy

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