[gtk] (12 commits) ...Merge branch 'wip/otte/listview-colors' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  70894b4... gtk-demo: Embed the RGBA value (*)
  bfdede7... Revert "gtk-demo: Make the colors demo populate incremental (*)
  8348a11... gtk-demo: Compute HSV values directly (*)
  1d26341... gtk-demo: Make colors demo contain all 16,777,216 colors (*)
  1b04517... gtk-demo: Add custom listmodel for all true colors. (*)
  f149beb... gtk-demo: Add a permutation to compute colors from the posi (*)
  456b762... gtk-demo: Allow color list to have any size (*)
  d3f7dea... gtk-demo: Reinstate incremental filling (*)
  a928ea6... sortlistmodel: Look at order (*)
  727a78a... gtk-demo: Add an "Unsorted" option (and default to it) (*)
  9b8c0f3... gtk-demo: Cosmetic improvement to the colors demo (*)
  7d409dd... Merge branch 'wip/otte/listview-colors' into 'master'

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