Add to `subshell' production in parse.y and recompile -DREDIRECTION_HACK to
get `< xx (command)' sh compatibility.
| redirections '(' list ')'
{
#if defined (REDIRECTION_HACK)
/* XXX - C News sh compatibility hack - XXX */
$3->redirects = $1;
$3->flags |= CMD_WANT_SUBSHELL;
$$ = $3;
#else
yyerror ();
YYABORT;
#endif
}