2007-12-03  Matthias Clasen  <mclasen@redhat.com>

        Two optimizations for icon cache lookups.

        * gtk/gtkiconcache.[hc]:
        * gtk/gtkicontheme.c: Remember the directory index for
        subdirectories, instead of running over the directory list
        again and again.

        * gtk/gtkiconcache.c (find_image_offset): Remember the last
        chain and try it first; this helps with the the usage patterns
        in gtkicontheme.c, where the same icon is queried for a lot
        of subdirectories.


svn path=/trunk/; revision=19099