Log Message:
Changes 2.8.8:

Core:
 - Make sure indexed images always have a colormap
 - Fix language selection via preferences on Windows
 - Don't crash on setting a large text size

GUI:
 - Keep the same image active when switching between MWM and SWM
 - Make sure all dockables are properly resizable (particularly shrinkable)
 - Add links to jump directly to Save/Export from the Export/Save
   file extension warning dialogs

Libgimp:
 - Fix GimpPickButton on OSX

Plug-ins:
 - Properly document plug-in-autocrop-layer's PDB interface
 - Fix importing of indexed BMPs

General:
 - Fix lots of places to use GIO to get proper file sizes and times on windows
 - Add an AppData file for GIMP
 - Backport lcms2 support from master, because lcms1 is not getting
   bug fixes any longer
 - Lots of bug fixes
 - Lots of translation updates