master updated (6e6a3efa2e -> 3713183a3d)

[Stefan Kangas]

skangas pushed a change to branch master.

      from  6e6a3efa2e Remove a nil cl-case case
       new  2984b752f1 ; image-dired: Delete unnecessary :group arg
       new  32b7aaa9f1 Add new library wallpaper.el
       new  535adb96f6 Add new command image-dired-set-wallpaper
       new  3713183a3d Use wallpaper-set in thumbs.el


Summary of changes:
 etc/NEWS                  |  11 ++++
 lisp/image/image-dired.el |  12 ++--
 lisp/image/wallpaper.el   | 146 ++++++++++++++++++++++++++++++++++++++++++++++
 lisp/thumbs.el            |  17 ++++--
 4 files changed, 176 insertions(+), 10 deletions(-)
 create mode 100644 lisp/image/wallpaper.el