[gimp] (16 commits) Non-fast-forward update to branch wip/nielsdg/vapi

[Niels De Graef <nielsdg src gnome org>]

The branch 'wip/nielsdg/vapi' 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:

  a5da66e... Allow building vala plugins

Commits added to the branch:

  8fa9221... app: don't leak text-tool UI manager (*)
  7412c4b... app: use G_GINT64_FORMAT to fix a long unsigned int vs. lon (*)
  a90f59d... app: fix alignment of generic pixel buffers (*)
  32740ac... app: improve alpha to selection with multiple items. (*)
  09870d4... app: zero-out transparent pixels when converting to indexed (*)
  081ebf1... app: more accurate undo names. (*)
  338ac50... app: "layers-mask-selection-*" multi-layers aware. (*)
  5c221df... app: layers-blend-space-* & layers-composite-space|mode-* m (*)
  62798ef... Update Ukrainian translation (*)
  95fa7bc... Issue #5109: "gimp-win64" CI artifact is missing gegl:npd s (*)
  842dc75... gir: (skip) functions with varargs (*)
  9fce475... Don't forget to include <glib-object.h> (*)
  ae4abba... app: layers-merge-group multi-layer aware. (*)
  25e535b... Fix missing includes (*)
  4bc328a... Update Ukrainian translation (*)
  6db935d... Allow building vala plugins

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