[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:

  ff8cfad... coverage: Build gidl-bindings
  36a2ce0... ci: Add .gitlab-ci.yml
  af190a3... ci: Add ubuntu:16.04 run with gcc
  f7a223c... ci: Add ubuntu:18.04 run with gcc
  b2b6ab9... ci: Add fedora:latest run with clang
  1d185c3... ci: Add archlinux/base:latest run with gcc
  fac1e6b... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  5b8322c... ci: Always deploy

Commits added to the branch:

  37c1a07... codegen: Refactor generation of fields for ccode structs (*)
  ed421a9... codegen: Commonized generation of public/private fields (*)
  04806bb... codegen: Cast instance parameter in member-initializer for  (*)
  a915e0c... Release 0.47.3 (*)
  d839ffe... vala: Fix base-access check for compact classes (*)
  83acaca... codegen: Skip StructRegisterFunction for boolean/integer/fl (*)
  1d1733f... codegen: Handle different type-symbols in visit_base_access (*)
  703f658... coverage: Build gidl-bindings
  2bdc2f3... ci: Add .gitlab-ci.yml
  8947f10... ci: Add ubuntu:16.04 run with gcc
  8f6a513... ci: Add ubuntu:18.04 run with gcc
  059883e... ci: Add fedora:latest run with clang
  42cdefc... ci: Add archlinux/base:latest run with gcc
  51385b5... ci: archlinux/bison - https://bugs.archlinux.org/task/64165
  6740bb6... ci: Always deploy

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