. tfe.cpp renamed to Uthernet1.cpp.
. add class NetworkBackend: common to both U1 and U2 cards, and abstracts Windows/Linux backends.
. modernise error message if WPCAP.DLL is not installed.
Support VidHD in slot 3 (via Config GUI or '-s3 vidhd') for SHR video modes only.
- AppleWin window is slightly enlarged when VidHD card is inserted.
Support IIgs 320x200 (and fill mode) and 640x200 video modes.
Debugger: add 'shr' command to view video
CUI: Allow user to specify width & height (for full-screen); and allow separate x,y scaling in full-screen mode.
. simplify the interface FrameBase to make it easier to implement it for different cases (remove HDC and make parameters more explicit)
. remove functions which are only called on a Win32Frame (in which case a cast is guaranteed to succeed)
. otherwise there is the risk that every FrameBase implementation wants to add its own variants.
. FrameBase::FrameRefreshStatus() simplify implementation: pass all flags explicitly
* Video / FrameBase: move arch specific code to FrameBase.
* Video::Initialize & SetFrameBuffer.
Ensure initialization and SetBuffer can only happen in the right order.
* Video: move virtual functions to FrameBase.
With these changes all the virtual functions are in FrameBase and Video gets closer to be (only) the Apple ][ Video device.
* Move a few more functions from Video to FrameBase (snapshot related)
Now, the inclusion is one way with Video *not* including FrameBase.
* FrameBase::VideoRefreshScreen move Video related code to Video.
And only leave management to FrameBase.
* WinVideo: move some generic functions back to Video.
Introduce a new virtual function (VideoPresentScreen) to draw the video buffer to video memory.
* Move Win32Frame::VideoRedrawScreen() to FrameBase as it is generic.
