patch 7.4.1588

Problem:    Old style test for quickfix.
Solution:   Turn test 96 into a new style test.

src/version.c

@@ -748,6 +748,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1588,
 /**/
     1587,
 /**/