
* unimplemented functions:
gimp_drawable_mask_bounds
gimp_drawable_offsets
*tile* functions
*rgn* functions
gimp_gradients_get_list
gimp_gradients_sample_uniform
gimp_gradients_sample_custom

* function clash could be solved by adding namespace
pdb_xxx and/or lib_xxx, i.e. pdb_gimp_palette_set_foreground and
lib_gimp_palette_set_foreground.

* oo interface for layers, image.. ?