* configure.in: AIX has libpthreads, to make sure you can have
more than one thread. Also add -D_THREAD_SAFE, and reorder
configure.in so CFLAGS doesn't get clobbered when we actually
want to modify it
* gdk/gdkimage.c: initialize the bpp and byte_order fields properly
in gdk_image_get
* gtk/testdnd.c: removed unused variable "buf"
-Yosh