patch 8.2.3964: some common lisp and scheme files not recognized

Problem:    Some common lisp and scheme files not recognized.
Solution:   Recognize *.asd as lisp and *.sld as scheme. (Alex Vear,
            closes #9447)
diff --git a/src/version.c b/src/version.c
index 8db61c2..db91b29 100644
--- a/src/version.c
+++ b/src/version.c
@@ -750,6 +750,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3964,
+/**/
     3963,
 /**/
     3962,