patch 8.0.1236: Mac features are confusing

Problem:    Mac features are confusing.
Solution:   Make feature names more consistent, add "osxdarwin". Rename
            feature flags, cleanup Mac code. (Kazunobu Kuriyama, closes #2178)
diff --git a/src/version.c b/src/version.c
index 60ea4f3..7a2bcf5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1236,
+/**/
     1235,
 /**/
     1234,
@@ -3389,15 +3391,11 @@
 #  endif
 # endif
 #endif
-#ifdef MACOS
-# ifdef MACOS_X
-#  ifdef MACOS_X_UNIX
-    MSG_PUTS(_("\nMacOS X (unix) version"));
-#  else
-    MSG_PUTS(_("\nMacOS X version"));
-#  endif
-#else
-    MSG_PUTS(_("\nMacOS version"));
+#if defined(MACOS_X)
+# if defined(MACOS_X_DARWIN)
+    MSG_PUTS(_("\nmacOS version"));
+# else
+    MSG_PUTS(_("\nmacOS version w/o darwin feat."));
 # endif
 #endif
 
@@ -3530,9 +3528,6 @@
 #	 if defined(TARGET_API_MAC_OSX) && TARGET_API_MAC_OSX
     MSG_PUTS(_("with Cocoa GUI."));
 #	 else
-#	  if defined(MACOS)
-    MSG_PUTS(_("with (classic) GUI."));
-#	  endif
 #	 endif
 #	endif
 #      endif