updated for version 7.4.650

Problem:    Configure check may fail because the dl library is not used.
Solution:   Put "-ldl" in LIBS rather than LDFLAGS. (Oazki Kiichi)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    650,
 /**/
     649,
 /**/