* Replace Buffer::isEof with Buffer::eof so I can use the agent-specific
ASSERT macro instead of the standard assert().
* If an API call in Win32Console fails, print a message using Trace.
* Add Coord::toString and SmallRect::toString functions.
* 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.
