* Integrated John Harper's patch to provide an Xlib-only version of
gdk-pixbuf. Now plain Xlib apps such as Sawfish can use gdk-pixbuf
(John Harper, Federico).
* Animation bounding box fixes (Larry).
* Important error-handling fixes to the JPEG and PNG loaders (Michael,
Larry).
* Miscellaneous build fixes (Darin, Frank, Mathieu).
* New flashy demo program of the scaling and compositing functions
(Federico).
* New appendix in the programmer's documentation describing how to
port applications from Imlib to gdk-pixbuf (Federico).
Add a new USE_LIBTOOL definition that uses the libtool package instead of
pkglibtool which is now considered outdated.
USE_PKGLIBTOOL is available for backwards compatibility with old packages
but is deprecated for new packages.
