This is version 1.0.4 of the GNU Image Manipulation Program.

This version is no longer distributed along with the Gtk toolkit;
you'll have to grab and install it separately.  Please install Gtk
before configuring the GIMP for compilation. This GIMP requires
GTK 1.2.0 or later.

gimp-data-extras contains a bunch of optional extra data files for GIMP.

See the files README and INSTALL in the archive for more details.