improve handling of cursor blinking for unix GUI terminal window * QUnixTerminalImpl.h, QUnixTerminalImpl.cpp (QUnixTerminalImpl::focusInEvent): Delete. * TerminalView.h, TerminalView.cpp (TerminalView::drawCursor): Don't check focus. (TerminalView::setBlinkingCursorState): New function. (TerminalView::setBlinkingCursor): Use it. (TerminalView::focusInEvent, TerminalView::focusOutEvent): New functions. (TerminalView::blinkCursorEvent): Only toggle state if _hasBlinkingCursor is true.

%!test
%! f = foo ();
%! x = [f,f];
%! assert (size (x), [1, 2])
%! assert (class (x), "foo")

%!test
%! f = foo ();
%! x = [f,f];
%! tmp = num2cell (x);
%! assert (iscell (tmp))
%! assert (size (tmp), [1, 2])
%! assert (class (tmp{1}), "foo")
%! assert (class (tmp{2}), "foo")