(copy_ascii_no_funny, copy_utf8_no_funny)

(copy_ascii_no_funny, copy_utf8_no_funny)
(copy_utf8_to_ascii_no_funny): New.
(flash, wall, prmptrd, uprmptrd, getcommand): Use them to filter
input.
(uprnf, pr_flash): Use them to filter output.
(prtoascii): No longer used, remove.

(player_commands, player_commands_index): Internal linkage.