Make sure transformed file names retain trailing slash in listing.

* src/list.c (simple_print_header): Print trailing slash
if using the transformed name.
Use had_trailing_slash instead of analyzing last byte if temp_name
Provide tar(1) and rmt(8) manpages.

* NEWS: Update.
* doc/Makefile.am: Add manpages.
* doc/tar.1: New file.

* src/tar.c (tar_help_filter): Handle LZOP_OPTION.
Don't install rmt.8 if rmt is not built.

* doc/Makefile.am [PU_RMT_COND]: Define RMT_8
(dist_man_MANS): use RMT_8 instead of the hardcoded rmt.8