[vala] (19 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:

  947582d... coverage: Build gidl-bindings
  5d5e022... ci: Add .gitlab-ci.yml
  ab5f848... ci: Add ubuntu:16.04 run with gcc
  4cb9a72... ci: Add archlinux:latest run with gcc
  e021f92... ci: Add alpine:edge run with gcc
  656e192... ci: Add fedora:rawhide run with clang
  51ad69b... Fedora rawhide is broken
  19e1188... ci: Use Fedora 34 (broken DBus)
  1614113... Ubuntu devel is broken
  362b216... Alpine edge is broken
  eeef030... ci: Build manual as pdf and html
  22e6fce... ci: Always deploy

Commits added to the branch:

  cd25750... vala: Require lvalue access of delegate target/destroy "fie (*)
  45fe852... codegen: Add support for async main (*)
  78da97b... codegen: Avoid symbol clashes with "va_*" from "stdarg.h" (*)
  8c72e14... parser: Reduce the source reference of main block method to (*)
  ca3c169... vala: Implement missing YieldStatement.accept() (*)
  47d85ba... vala: Make Vala.Variable an abstract class (*)
  eea3a2a... vala: async-ize main block when yield is used (*)
  60aeba8... coverage: Build gidl-bindings
  dfb8221... ci: Add .gitlab-ci.yml
  9e3855f... ci: Add ubuntu:16.04 run with gcc
  3b023d4... ci: Add archlinux:latest run with gcc
  2426661... ci: Add alpine:edge run with gcc
  9c086d5... ci: Add fedora:rawhide run with clang
  5f5436f... Fedora rawhide is broken
  5bb8121... ci: Use Fedora 34 (broken DBus)
  4d67a1c... Ubuntu devel is broken
  faf8446... Alpine edge is broken
  7ffdc1d... ci: Build manual as pdf and html
  ee618d4... ci: Always deploy

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