[gimp] (7 commits) Non-fast-forward update to branch wip/Jehan/incremental-win-installer-improvements

[Jehan <jehanp src gnome org>]

The branch 'wip/Jehan/incremental-win-installer-improvements' 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:

  a8e1f21... Debug.
  cc95c21... Test: install lua51 and lua51-lgi.
  ab24bb7... build: move lua import files into bin/.

Commits added to the branch:

  11a891b... Issue #6257: Race condition bug in meson build. (*)
  9c6776f... Issue #6257: Race condition bug in meson build. (*)
  18785bf... build: clean out obsolete Windows-specific patches. (*)
  0625902... app: set "OK" the default button to the "Create a New Image (*)
  914405e... Debug.
  077953b... Test: install lua51 and lua51-lgi.
  929e5b8... build: move lua import files into bin/.

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