* Makefile.am blend.c boundary.c by_color_select.c channel.c
* color_picker.c drawable_cmds.c fuzzy_select.c gimpimage.c
* image_render.c ink.c layer.c main.c paint_core.c paint_funcs.c
* pixel_region.c plug_in.c tile.c tile.h tile_cache.c tile_manager.c
* tile_swap.c transform_core.c undo.c xcf.c: split off tile_pvt.h
from tile.h so changes in the tile implementation don't force a
complete recompile.
--sg