Doc: Change instances of '(Mac) OS X' to 'macOS'

As of version 10.12 (Sierra), the name of Apple's desktop operating
system will be macOS. Change the occurrences where the Mac platform
is discussed to use a macro \macos, which expands to 'macOS'. This
helps with adapting to future renaming.

Update the instructions on mac-specific Q_OS_* macro usage.

Add a \target for the old 'Qt for OS X' topic to keep links working
for other documentation modules that try to link with the old name.

Change-Id: Id33fb0cd985df702a4ae4efb4c5fd428e77d9b85
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/printsupport/dialogs/qpagesetupdialog.cpp b/src/printsupport/dialogs/qpagesetupdialog.cpp
index 425a8cd9d5..9a358a97e7 100644
--- a/src/printsupport/dialogs/qpagesetupdialog.cpp
+++ b/src/printsupport/dialogs/qpagesetupdialog.cpp
@@ -50,12 +50,12 @@ QT_BEGIN_NAMESPACE
     \ingroup printing
     \inmodule QtPrintSupport
 
-    On Windows and OS X the page setup dialog is implemented using
+    On Windows and \macos the page setup dialog is implemented using
     the native page setup dialogs.
 
-    Note that on Windows and OS X custom paper sizes won't be
+    Note that on Windows and \macos custom paper sizes won't be
     reflected in the native page setup dialogs. Additionally, custom
-    page margins set on a QPrinter won't show in the native OS X
+    page margins set on a QPrinter won't show in the native \macos
     page setup dialog.
 
     \sa QPrinter, QPrintDialog