patch 7.4.971

Problem:    The asin() function can't be used.
Solution:   Sort the function table properly. (Watiko)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    971,
 /**/
     970,
 /**/