- handle all sorts of image types, gegl_buffer_get() will convert to u8
- specify GIMP_EXPORT_CAN_HANDLE_LAYERS_AS_ANIMATION
- modify the export duplicate, not the original image
- fix handling of the drawable type and only save "R'G'B'A u8"
  or "R'G'B' u8", fixes bug 770664.
- completely redo run(SAVE_PROC) to deal with export correctly
- turn global variables into the standard SAVE_PROC, PLUG_IN_BINARY etc
  defines
- simplify the save dialog

MihailZenkov authored Sep 04, 2016 and Michael Natterer committed Sep 04, 2016

Use the drawable's (indexed bitmap) format instead of "Y' u8" when
exporting to PBM, this got broken when porting to GEGL.

if the plug-in specifies GIMP_EXPORT_CAN_HANDLE_LAYERS_AS_AMINATION
(instead of defaulting to flattening or merging visible layers).

so we can potentially ship profiles and they will be found reliably,
and users can store profiles in their gimpdir. Still parses the old
uri-based locations.

Use Freedesktop standard names in priority when possible.

Argh! I should always test both the vectorial and raster icons before
pushing!

... standard icon names and GTK+ icon names as second choice.
We should only use GIMP specific icon names as last resort, when there
is no standard or GTK+ names dedicated to the function.
This is made possible thanks to commit 3cc77b03.

s/gimp-document-recent/document-open-recent/
s/gimp-indent/format-indent-more/
s/gimp-next/go-next/
s/gimp-previous/go-previous/
s/gimp-save/document-save/
s/gimp-save-as/document-save-as/
s/gimp-revert/document-revert/
s/gimp-open/document-open/
s/gimp-document-recent/document-open-recent/
s/gimp-quit/window-close/ ou s/gimp-quit/application-exit/
s/gimp-warning/dialog-warning/
s/gimp-edit-clear/edit-clear/

s/gimp-justify-.*/gtk-justify-.*/
s/gimp-font/gtk-select-font/
s/gimp-color-palette/gtk-select-color/
s/gimp-cancel/gtk-cancel/

In eraser mode, paint with the background color on layers without alpha.

instead of a plain g_filename_to_utf8(), so special paths like
${gimp_dir}, ${gimp_plug_in_dir} etc get substituted correctly.

GimpPathEditor wass passing an UTF-8 string.

make it possible to use themed standard named icons
so to have also gtk dialogs show icons in the same style
as GIMP ui.

instead of the previous ad-hoc hack.

which is the opposite of gimp_config_path_expand() and replaces all
occurances of well-known gimprc paths with their respective
identifiers such as ${gimp_data_directory}, ${gimp_directory} etc.

so they get found without re-querying by relocatable GIMP packages.

also add a GimpContext* parameter to prefs_color_button_add()
and call gimp_color_panel_set_context() for the caller.

Remember the "Feather Selection", "Grow Selection", "Shrink Selection"
and "Border Selection" dialog settings in GimpDialogConfig.

... easier to detect automatically.

Remember the "New Path" dialog settings in GimpDialogConfig.

Remember the "New Channel" dialog settings in GimpDialogConfig.