Rename README.osx to README.macos

Conform the file name to current system marketing name.

Makefile.am

@@ -13,9 +13,9 @@ EXTRA_DIST = \
 	PLAN \
 	README.developer \
 	README.freqranges \
+	README.macos \
 	README.md \
 	README.multicast \
-	README.osx \
 	hamlib.m4 \
 	hamlib.pc.in
 

doc/index.doxygen

@@ -141,8 +141,8 @@ GNU/Linux.
 \latexinclude build-w64.sh.tex
 */
 
-/*! \page Rdmeosx README.osx
-\verbinclude README.osx
+/*! \page Rdmeosx README.macos
+\verbinclude README.macos
 */
 
 /*! \page Rdmefrq README.freqranges