patch 7.4.2160

Problem:    setmatches() mixes up values. (Nikolai Pavlov)
Solution:   Save the string instead of reusing a shared buffer.

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2160,
 /**/
     2159,
 /**/