Problem: Terminfo entries for bracketed paste are not used.
Solution: Use the newly added terminfo entries for bracketed paste.
Correct mixup of output strings and key codes.
Problem: The keyboard state response may end up in a shell command.
Solution: Only request the keyboard protocol state when the typeahead is
empty, no more commands are following and not exiting. Add the
t_RK termcap entry for this.
