Modernize usage of 'macOS' in doc and comments

Apple changed the spelling of its operating system again, to "macOS",
effective with macOS 10.12 Sierra (2016-09-20).  Change Emacs
documentation and comments to match this.  Stick with older OS
spellings ("OS X", "Mac OS X") when talking about older releases where
the older names are more correct.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/nsimage.m b/src/nsimage.m
index 5b2534b9007..66aecd4289d 100644
--- a/src/nsimage.m
+++ b/src/nsimage.m
@@ -1,4 +1,4 @@
-/* Image support for the NeXT/Open/GNUstep and MacOSX window system.
+/* Image support for the NeXT/Open/GNUstep and macOS window system.
    Copyright (C) 1989, 1992-1994, 2005-2006, 2008-2016 Free Software
    Foundation, Inc.
 
@@ -21,7 +21,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 Originally by Carl Edman
 Updated by Christian Limpach (chris@nice.ch)
 OpenStep/Rhapsody port by Scott Bender (sbender@harmony-ds.com)
-MacOSX/Aqua port by Christophe de Dinechin (descubes@earthlink.net)
+macOS/Aqua port by Christophe de Dinechin (descubes@earthlink.net)
 GNUstep port and post-20 update by Adrian Robert (arobert@cogsci.ucsd.edu)
 */