USB device drivers support

[Alexander Morozov]

Hello,

I sent patch "Add support of WDM drivers for USB devices." in October and 
received such reply from Alexandre Julliard:
> Your design needs a lot more thought. You can't add all these
> Wine-specific modules, or make winedevice special-case usb devices, or
> poll the server for the add_device request like you do. All this needs
> to be properly integrated in the existing infrastructure.

I`d like to ask about better way of modifying patches which add USB device 
drivers support before doing something.

Wineusb and wineusbhub can be moved to usbhub.sys. This driver creates a 
device which is used as second argument for AddDevice on Windows XP. So no 
wine-specific modules will be added.

Using wineserver to call AddDevice can be avoided if move code which loads 
device drivers and code which enumerates devices and call AddDevice to one 
process. This can be made if use one winedevice process for all drivers. This 
will allow every driver to use IRP, DEVICE_OBJECTs and other structures 
created by other driver and will help to implement such functions as 
IoGetDeviceObjectPointer. Can I do so? Or there are some reasons which do not 
allow?

Thanks, Alexander