[gimp] (66 commits) Non-fast-forward update to branch wip/pippin

[Øyvind Kolås <ok src gnome org>]

The branch 'wip/pippin' 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:

  a0822ee... app: do promotion to float by default in default settings
  da5378e... app: make levels config request linear colors
  3e04d86... app: make curves tool pick in linear
  a047a4c... operations: make levels and curves operate on linear data
  feb003b... app: default many created gimp_histograms to linear
  dcb8c91... app: hide advanced color options

Commits added to the branch:

  a2f3616... app: more consistent layer/comp parameter usage in the comp (*)
  40c0ea4... app: add GIMP_LAYER_MODE_FLAG_SUBTRACTIVE (*)
  398a7b0... app: add subtractive compositing functions to GimpOperation (*)
  b22c09e... app: implement color-erase mode as a GimpOperationLayerMode (*)
  7b23e0e... app: add LEGACY flag to NORMAL_LEGACY mode (*)
  c9a0b5a... Bug 778284 - Release howto should mention to close all runn (*)
  44b4d0f... app: small fixes in gimpoperationlayermode.c (*)
  7704b61... Bug 779326 - GIMP Crash on Merging/flattening image ... ... (*)
  8e68ca8... app: fix NULL mask handling in previous commit (*)
  2224733... Bug 779827 - Brushes in Symmetry Tiling mode are off by one (*)
  91ef42d... app: fix subtractive src-over compositing (*)
  dfb3ddc... app: make erase mode an ordinary layer/paint mode (*)
  7d34507... app: make color-erase mode an ordinary layer mode (*)
  c6c0899... app: add mono-mix layer mode (*)
  4a75f33... libgimpwidgets: s/"document-open"/GIMP_ICON_DOCUMENT_OPEN/  (*)
  bf21bc1... devel-docs: add missing stuff to *-sections.txt files (*)
  157d70e... Bug 768066 - Color picker tool should indicate pick positio (*)
  23e6984... app: add merge layer mode (*)
  ed0fda0... app: add split layer mode (*)
  cfae836... Bug 745835 - Small icons as Option, not theme (*)
  86cd53e... app: dockbook tab icon size depends on the icon settings. (*)
  26f054e... app: GimpEditor styling depending on config's icon settings (*)
  e30c92c... app: also update dockbook tab borders with icon sizes. (*)
  a88afe4... app: fix dockbook tab border values. (*)
  682c5e9... Update Greek translation (*)
  7d8976a... Update POTFILES.in (*)
  59488ff... app: order config-enums.h alphabetically (*)
  ab1bc49... configure: vector icons now in auto mode. (*)
  6aaf667... Update Polish translation (*)
  33196a6... app: minor tab cleaning. (*)
  0753296... app: remove unused gimp_tool_palette_initialize_tools(). (*)
  324e1a2... app: completely minor typo in function parameter. (*)
  e29e950... app: make sure signal connections are disconnected later. (*)
  d603b70... app: pack the icon size scale into the right vbox in the pr (*)
  9921d4c... app: derive GimpIconSizeScale from GimpFrame not GtkFrame (*)
  064c452... Bug 779942 - Make GimpPickButton honor monitor profile (*)
  1b0966d... app: fix double node insertion to a graphless filter stack (*)
  a4d7841... Update Italian translation (*)
  1f24573... Update Italian translation (*)
  e2ff186... Bug 779942 - Make GimpPickButton honor monitor profile (*)
  06e0c75... Update Italian translation (*)
  9d4084c... app: in gimp_composite_blend(), reduce conversion of transp (*)
  677bc33... Update Hungarian translation (*)
  3fa2c91... app: remove mono-mix layer mode (*)
  bcb242d... app: improve performance of HSV value mode (*)
  77211f1... app: improve performance of HSV saturation mode (*)
  45516a0... app: improve performance of HSV [sic] color mode (*)
  661c22c... app: rename "Color (HSV)" mode to "Color (HSL)" (*)
  ff5eb69... app: improve performance of HSV hue mode (*)
  da9c427... app: fix version comments in GimpLayerMode enum (*)
  03756d0... app: rename "Color (HSV) (legacy)" mode to "Color (HSL) (le (*)
  e69e84c... plug-ins: s/HSV_COLOR_LEGACY/HSL_COLOR_LEGACY/ in file-open (*)
  8055f14... app: fix and streamline HSL color layer mode (*)
  9eb143f... Bug 780137 - SVG icon files are not removed by make distcle (*)
  140835a... Update Kazakh translation (*)
  4cec2b9... Update Kazakh translation (*)
  5ea5458... app: fix child offsets of a pasted layer group (*)
  48e4044... Bug 780065 - Change default way to desaturate to Luminance (*)
  461d807... libgimpwidgets: order enum combos of GimpDesaturateMode mor (*)
  6a9c8e9... Update Swedish translation (*)
  f93cb85... app: do promotion to float by default in default settings
  a4f844c... app: make levels config request linear colors
  c14d77f... app: make curves tool pick in linear
  2edafe0... operations: make levels and curves operate on linear data
  bade4bf... app: default many created gimp_histograms to linear
  30acf91... app: hide advanced color options

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