[gimp] (13 commits) Non-fast-forward update to branch wip/Jehan/artifacts-prefix

[Jehan <jehanp src gnome org>]

The branch 'wip/Jehan/artifacts-prefix' 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:

  7d29c00... gitlab-ci: (Win32) add install prefix to artifacts.

Commits added to the branch:

  6adf77e... app, menus: add gegl:normal-map to Filters -> Generic (*)
  c7c0397... libgimp: add gimp_procedure_find_argument(), aux_argument() (*)
  991703a... plug-ins: minor cleanups in file-jpeg, no porting to new st (*)
  f7c7924... libgimp: automatically handle the image comment in GimpProc (*)
  e21f78e... plug-ins: add an aux "comment" argument to file-png-save (*)
  c25778c... plug-ins: use begin_export()/end_export() in file-csource (*)
  ba77ce5... plug-ins: use begin_export() and end_export() in file-xbm (*)
  db6a0c6... po-libgimp: update POTFILES.in (*)
  dad6500... plug-ins: port file-raw-save to GimpProcedureConfig and pro (*)
  286de59... meson: wrong pangocairo minimum requirement. (*)
  211b7de... app: add babl version info to $ gimp -v (*)
  5da0251... gitlab-ci: (Win32) add install prefix to artifacts.
  6b6ce6b... build: mask glib and pango from pre-built Win32 package for

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