[gegl] (16 commits) Non-fast-forward update to branch wip/rishi/Wredundant-decls

[Debarshi Ray <debarshir src gnome org>]

The branch 'wip/rishi/Wredundant-decls' 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:

  058d004... Silence -Wredundant-decls in GEGL API consumers

Commits added to the branch:

  fae13c7... buffer: s/babl_model_get_flags/babl_get_model_flags/ (*)
  df6e711... gegl: initial CMYK support for GeglColor (*)
  67a99ea... gegl: fix gtkdoc/gir syntax for gegl_color_get_format (*)
  a472e83... workshop: add a gray component replacement implementation (*)
  22ecd47... vector-fill: handle CMYK (*)
  78ffaca... vector-stroke: handle CMYK (*)
  6557b5e... path: handle CMYK (*)
  91468f6... text: handle CMYK (*)
  196898b... gegl: fix code-doc vs declration mismatch (*)
  5e670d8... gegl: add GEGL_BABL_VARIANT_ALPHA (*)
  8360114... opacity: generalize for grayscale rgb and cmyk (*)
  6f4f5f9... tiff-save: store as CMYK with ICC profile even if incoming  (*)
  83dd017... gblur-1d: always operate on additive like CMYK with alpha (*)
  06102eb... buffer: fixing issue #114, cull invalid coordinates in boxf (*)
  eb1cb73... gegl: fix type in babl model (*)
  b92dbad... Silence -Wredundant-decls in GEGL API consumers

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