[ 1005008 ] curses.wrapper should also forward keyword args

Plus my rewrite to use finally as opposed to painfully doing the
equivalent by hand.

Rework previous fix slightly; the &0x20 test seems useless, and the isprint() check mustn't prevent the meta-bit check at the end

Edit comment

    define COLORS or COLOR_PAIRS until after start_color() is called,
    but they were never added to the curses module.  Fixed by adding
    a wrapper around start_color(), similar to the wrapper around initscr().

    beyond what's in _curses_panel

convert semicolons to newlines

and I lack the time to track down the cause.