[vala] (31 commits) Non-fast-forward update to branch wip/meson

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/meson' 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:

  aeacf85... meson: Add initial build support
  5b0a821... meson: Allow static builds
  3e6797a... meson: Compile everything with stricter cflags
  6002c94... WIP meson: Add tests
  0ea4a70... WIP meson: Add internal-api-docs
  3c46725... Pass LD_LIBRARY_PATH as "env" where needed
  db082d7... WIP meson: Add meson-bootstrap.sh

Commits added to the branch:

  9c4f920... tests: Don't check generated C for conditional glib test (*)
  2848b53... vala: this_parameter property for subroutines is nullable (*)
  f25b5b1... girwriter: Add explicit writable attribute to all field ele (*)
  f3a8f1a... girparser: Never skip "function" elements (*)
  f00ba57... girparser: Add "move-to" value of functions as Version.repl (*)
  484c97c... girparser: Improve instance method detection (*)
  9d57089... Regenerate GIR-based bindings for improved instance method  (*)
  35b3b43... girwriter: Fix position of "result" parameter for struct co (*)
  4bc9381... girparser: Add support for "final" class attribute (*)
  7ebb25f... Add support for sealed classes (*)
  453c81d... Slightly improve source_reference for get_dup_func_expressi (*)
  9572175... vala: Add support for null-safe access operator (*)
  c68a9d0... girwriter: Write missing c:type attribute of compact class  (*)
  941f4fa... gtk4: Update to 4.3.2+04f3c805 (*)
  5479850... gstreamer: Update from 1.19.0+ git master (*)
  0afdde0... vapi: Update GIR-based bindings (*)
  be03c3c... gobject-2.0: Fix the Closure.invoke() signature (*)
  a0e8e4b... vala: Disallow resize() for constant arrays (*)
  4f14b64... Sync NEWS from 0.52 (*)
  d998299... tests: Add more "null-safe access" tests to increase covera (*)
  9471ab0... webkit2gtk-4.0: Update to 2.33.3 (*)
  cf3a408... girwriter: Improve struct creation method binding (*)
  dc46b5f... Release 0.53.1 (*)
  cd99b84... meson: Add initial build support
  8e8fa7e... meson: Allow static builds
  efe1de2... meson: Compile everything with stricter cflags
  30ca10f... WIP meson: Add tests
  d0fb4fa... WIP meson: Add internal-api-docs
  c51011a... Pass LD_LIBRARY_PATH as "env" where needed
  fc738d4... Broken evaluation of "Requires.private: gmodule-no-export-2
  0ca1262... WIP meson: Add meson-bootstrap.sh

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