Fix some uses of int in list.c

* src/list.c (decode_xform): Last arg is now int, not a void *
pointer to that int.  All uses changed.
(enforce_one_top_level): Don’t assume string length fits in int.
(transform_stat_info): Prefer char to int for typeflag.
All uses changed.
(decode_header): Prefer bool for booleans.  All uses changed.
(ugswidth): Now idx_t, not int, since in theory it could
exceed INT_MAX.  All uses changed.
(simple_print_header, print_for_mkdir): Don’t assume printf length
fits in int, and similarly for length of user or group name.
* src/transform.c (transform_name_fp): Last arg is now int, not void *.
All uses changed.

src/transform.c

@@ -589,7 +589,7 @@ _transform_name_to_obstack (int flags, char *input, char **output)
 
 bool
 transform_name_fp (char **pinput, int flags,
-		   char *(*fun)(char *, void *), void *dat)
+		   char *(*fun) (char *, int), int dat)
 {
     char *str;
     bool ret = _transform_name_to_obstack (flags, *pinput, &str);
@@ -611,7 +611,7 @@ transform_name_fp (char **pinput, int flags,
 bool
 transform_name (char **pinput, int type)
 {
-  return transform_name_fp (pinput, type, NULL, NULL);
+  return transform_name_fp (pinput, type, NULL, 0);
 }
 
 bool