patch 8.0.1847: some build options don't have an example

Problem:    Some build options don't have an example.
Solution:   Add a couple more examples and compiler flags.

src/version.c

@@ -761,6 +761,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1847,
 /**/
     1846,
 /**/