master updated (f6fb2b9e1f -> ca043773db)

[Stefan Kangas]

skangas pushed a change to branch master.

      from  f6fb2b9e1f Port better to C23 bool+true+false keywords
       new  b5b59d1b8a Standardize XPM files
       new  6cffaa3b6d image-dired: End thumbnail file names with ".jpg"
       new  ca043773db ; Fix debugging image-dired-dired-toggle-marked-thumbs


Summary of changes:
 etc/NEWS                                  |  9 ++++++
 etc/images/checked.xpm                    | 19 -----------
 etc/images/gnus/gnus-pointer.xpm          |  6 ++--
 etc/images/gnus/gnus.xpm                  |  4 +--
 etc/images/mh-logo.xpm                    | 28 ++--------------
 etc/images/unchecked.xpm                  | 19 -----------
 lisp/image/image-dired-dired.el           |  1 +
 lisp/image/image-dired-util.el            | 53 +++++++++++++------------------
 test/lisp/image/image-dired-util-tests.el |  7 ++--
 9 files changed, 44 insertions(+), 102 deletions(-)