- Use F_OWNER() and F_GROUP() instead of F_UID() and F_GID().

- Made recv_file_entry() name the xmit-flags variable "xflags" to
  prevent confusion with the internal flags value we're creating.
- Added an arg to the calls of recv_group_name() and match_gid().
- Use the improved function names: send_id_list() and recv_id_list().
- Improved the display of the GID values in output_flist().