* gimptool.in: Added --cflags-noui and --libs-noui flags and
appropriate sed junk to craft it. Don't call gtk-config unless
GTK_CONFIG is set; hard code the info. Strip out redundant
stuff from the output

* libgimp/gimp.h
* libgimp/gimpimage.c: make gimp_image_flatten return a value
to be consistent with the PDB

-Yosh