master updated (1cc4babde23 -> f4e20656979)

eliz pushed a change to branch master.

      from  1cc4babde23 ; Turn off a mode with -1, not zero
       new  d5f515e4a33 New image type canvas
       new  f4e20656979 ; Minor fixes of the last change


Summary of changes:
 doc/lispref/display.texi                   | 108 ++++++
 doc/lispref/elisp.texi                     |   1 +
 doc/lispref/internals.texi                 |  48 +++
 etc/NEWS                                   |   9 +
 lisp/image.el                              |   3 +
 src/dispextern.h                           |  22 +-
 src/emacs-module.c                         |  10 +
 src/image.c                                | 525 ++++++++++++++++++++++++++++-
 src/module-env-32.h                        |   9 +
 src/nsimage.m                              |   7 +
 src/nsterm.h                               |   1 +
 src/xdisp.c                                |  76 +++++
 test/src/emacs-module-resources/mod-test.c | 115 +++++++
 test/src/emacs-module-tests.el             | 117 +++++++
 14 files changed, 1031 insertions(+), 20 deletions(-)