master updated (163424e04b -> 0db604a914)

[Lars Ingebrigtsen]

larsi pushed a change to branch master.

      from  163424e04b Correctly set marker position after specpdl is unwound 
during printing
       new  601737d750 Add support for user-customizable icons
       new  d7e848ccda Use icons in outline
       new  0db604a914 Use icons in warnings buffers


Summary of changes:
 doc/emacs/custom.texi               |   3 +
 doc/emacs/display.texi              |  33 +++++
 doc/lispref/display.texi            | 156 +++++++++++++++++++
 etc/NEWS                            |   9 +-
 lisp/button.el                      |  14 +-
 lisp/cus-edit.el                    | 288 +++++++++++++++++++++++++++++++++++-
 lisp/custom.el                      |   2 +-
 lisp/emacs-lisp/icons.el            | 265 +++++++++++++++++++++++++++++++++
 lisp/emacs-lisp/warnings.el         |  55 +++----
 lisp/help.el                        |   1 -
 lisp/outline.el                     |  86 ++++++-----
 test/lisp/emacs-lisp/icons-tests.el |  63 ++++++++
 12 files changed, 898 insertions(+), 77 deletions(-)
 create mode 100644 lisp/emacs-lisp/icons.el
 create mode 100644 test/lisp/emacs-lisp/icons-tests.el