* Makefile.am: cosmetic fix

* libgimp/color_display.h
* modules/cdisplay_gamma.c: add clone method

* app/color_area.[ch]
* app/gdisplay.[ch]
* app/gdisplay_color.c
* app/gdisplay_color_ui.c: preliminary support for color_area filter
(really just a sync to home machine)

* app/nav_window.c: minor cleanup

* tools/pdbgen/app.pl: initialize gbooleans to FALSE, not 0

* tools/pdbgen/lib.pl: some more arg work

-Yosh