* gcmd.c (gnome_close_panel): When a panel is destroyed, chdir to
root directory, as the process will be holding the inode for the
directory that was selected until an operation is performed in
another panel.
* gicon.c (gicon_get_icon_for_file): Invert the way the testing
for icons is done to handle directories properly.
* gicon.c (gnome_file_entry_color): If we do not have permissions
for this directory, indicate this with a special icon.
* gscreen.c (panel_icon_list_select_icon): Middle button opens a
new panel on a directory.
