patch 8.2.4081: CodeQL reports problem in if_cscope causing it to fail

Problem:    CodeQL reports problem in if_cscope causing it to fail.
Solution:   Use execvp() instead of execl().  Merge the header file into the
            source file. (Ozaki Kiichi, closes #9519)

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4081,
 /**/
     4080,
 /**/