Before the Qt removal, Terminal::finishOutput accepted a QPoint object with
a 32-bit line number. Changing it to accept Coord introduced a bug because
the Coord line number is only 16-bits. The moveTerminalToLine and sendLine
methods still accepted a 32-bit line number, though.
The result was, after 32768 lines of output, the
Terminal::moveTerminalToLine function would be called alternately with
truncated and untruncated line numbers (e.g. -32000 and 33536), and the
function would generate massive amounts of "cursor up" and "newline"
output.
* Replace QPoint and QSize with Coord, a C++ class derived from COORD.
* Replace QRect with SmallRect, a C++ class derived from SMALL_RECT.
* Turn Win32Console into a non-QObject class.
