[gegl] (19 commits) Non-fast-forward update to branch wip/rishi/issue-60

[Øyvind "pippin" Kolås <ok src gnome org>]

The branch 'wip/rishi/issue-60' 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:

  633afc6... tools/gegl-imgcmp: fail if no output image

Commits added to the branch:

  ccd6279... meson: use python installation found by meson (*)
  ad70211... Revert "meson: use python installation found by meson" (*)
  5dacb92... gitlab-ci: remove autotools (*)
  e1b91c8... gitlab-ci: remove graphviz dependency (*)
  6b01266... remove autotools (*)
  7699850... remove dir build (*)
  ed254ab... meson: move dist-script.sh to tools/ (*)
  af36942... Update Polish translation (*)
  70f6061... jpg-save: if the space of the incoming buffer is gray, forc (*)
  250bf33... meson: Do not build with f16c support by default (*)
  df6099a... noise-perlin: use gegl_rectangle_infinite_plane in get_boun (*)
  51e0ee0... build: Replace deprecated Python 3 module with Python (*)
  e1aa95a... build: Fix the build when '/usr/bin/env python' doesn't wor (*)
  628caaa... meson: add the glib preset to i18n (*)
  4e31e83... meson: remove po/Makevars (*)
  b3224d5... Cleanup after meson port. (*)
  07e7bfa... add missing cl file (*)
  e7f0796... Fix typo in copyright - gegl-visitor.h (*)
  628f3c0... tools/gegl-imgcmp: fail if no output image

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