[vala] (20 commits) Non-fast-forward update to branch wip/issue/606

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/issue/606' 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:

  b1e29a4... WIP girwriter: Infer gir_namespace/version from target GIR 
  e9b5e34... WIP build: Generate GIRs for libvala
  46b6354... WIP build: Check for valac with sufficient GIR support

Commits added to the branch:

  82506bd... gtk4: Update to 3.96.0+322507f2 (*)
  96cc5c9... vala: Strip "basedir" from Source.filename attribute (*)
  9365176... Release 0.45.1 (*)
  44f94a2... gstreamer: Update from 1.17.0+ git master (*)
  e9a7a08... vapi: Update GIR-based bindings (*)
  6b021bb... webkit2gtk-4.0: Update to 2.25.1 (*)
  4ba7672... gstreamer: Update from 1.17.0+ git master (*)
  bbd3af2... gtk4: Update to 3.96.0+cfe648eb (*)
  d611472... gtk4: Update to 3.96.0+69016825 (*)
  c835e02... genie: Drop unused "writeonly" token (*)
  2608af4... glib-2.0: Add Unicode 12.0 symbols (*)
  a9b927a... gmodule-2.0: Build from GIR (*)
  ce08144... libvaladoc: Use non-deprecated GLib.ModuleFlags values (*)
  1aeda5f... codegen: Use array_length of collection variable instead of (*)
  5e96fb6... girwriter: Report error on secondary top-level namespace to (*)
  31728fc... genie: Make 'self' match its TokenType name (*)
  9dbb041... vala: Use non-deprecated GLib.ModuleFlags values (*)
  58747d0... WIP girwriter: Infer gir_namespace/version from target GIR 
  e2445c9... WIP build: Generate GIRs for libvala
  594c6b2... WIP build: Check for valac with sufficient GIR support

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