patch 7.4.1215

Problem:    Using old style function declarations.
Solution:   Change to new style function declarations. (script by Hirohito
            Higashi)

runtime/doc/doctags.c

@@ -14,9 +14,7 @@
 #define LINELEN 200
 
 	int
-main(argc, argv)
-	int		argc;
-	char	**argv;
+main(int argc, char **argv)
 {
 	char	line[LINELEN];
 	char	*p1, *p2;