* numeric.c (rb_num2ulong_internal): New function similart to
  rb_num2ulong but integer wrap around flag is also returned.
  (rb_num2ulong): Use rb_num2ulong_internal.
  (rb_num2uint): Use rb_num2ulong_internal and the wrap around flag is
  used instead of negative_int_p(val).
  (rb_num2ushort): ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40017 b2dd03c8-39d4-4d8f-98ff-823fe69b080e