second set of ANSI C changes: C89-style function declarations, more inline functions, remove register keyword

builtins/kill.def

@@ -82,8 +82,7 @@ static void kill_error (pid_t, int);
    kill -KILL %1?  No, if you fill up the process table this way you
    can still kill some. */
 int
-kill_builtin (list)
-     WORD_LIST *list;
+kill_builtin (WORD_LIST *list)
 {
   int sig, any_succeeded, listing, saw_signal, dflags;
   char *sigspec, *word;
@@ -263,9 +262,7 @@ use_sigspec:
 }
 
 static void
-kill_error (pid, e)
-     pid_t pid;
-     int e;
+kill_error (pid_t pid, int e)
 {
   char *x;