patch 7.4.1979

Problem:    Getting value of binary option is wrong. (Kent Sibilev)
Solution:   Fix type cast.  Add a test.

src/version.c

@@ -758,6 +758,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1979,
 /**/
     1978,
 /**/