Fix unquoting of input file names.

* src/names.c (read_next_name): Unquote file names coming from the
-T argument.  Bug reported by Nicolas Dudebout.
* THANKS: Update.
Fix GNU long link header.

* src/create.c (write_gnu_long_link): Set timestamp to
0 for backward compatibility.  Bug reported by David Barri.
* THANKS: Update.
Fix star compatibility (sparse headers)

* src/sparse.c (star_get_sparse_info): Update file->dumped_size
Version 1.27.1