* plug-ins/common/plugin-defs.pl: add sample_colorize and
curve_bend defs

* libgimp/color_selector.h: minor consistency cleanup

* libgimp/gimpchainbutton.[ch]: use new style gtk object helper macros

* libgimp/gimpfileselection.c
* libgimp/gimpmatrix.h: minor cleanup

* libgimp/gimpintl.h: resync with gnome-i18n.h


* libgimp/color_display.h
* app/gimp.sym
* app/gdisplay_color.[ch]
* app/app_procs.c
* app/gdisplay.h
* app/image_render.c: color display transformation code. Still
unfinished, so it's not activated yet.

* app/buildmenu.h: remove unused defines (PULLDOWN, POPUP, OPTION)

* app/colormaps.[ch]
* app/image_render.c: remove vestigal dithering stuff

* app/convolve.h
* app/gimpdrawable.h
* app/gimpimage.h
* app/lut_funcs.h
* app/paint_funcs.h
* app/plug_in.h: enum nick changes from Marc

* app/channel_ops.c
* app/crop.c
* app/gdisplay.c
* app/gimpimage.[ch]
* app/move.c: s/([A-Z]+)_GUIDE/ORIENTATION_$1/

* app/flip_tool.[ch]
* app/shear_tool.[ch]: use ORIE...