+ userspec: depend on the inttostr module, too
+ * modules/userspec (Depends-on): Add inttostr.
+
+ userspec: disallow an ID that maps to (uid_t)-1 or (gid_t)-1
+ * lib/userspec.c (parse_with_separator): Do not accept a user ID
+ number of MAXUID when it evaluates to (uid_t) -1.
+ Likewise for group ID. Reported by Matt McCutchen in
+ <http://savannah.gnu.org/bugs/?28113>
+