- Check for valid DeviceExtensionSize

- Check for valid DeviceExtensionSize
- Pass correct flags when creating the fdo
- set DO_DIRECT_IO flag
- clear DO_DEVICE_INITIALIZING flag
- Move all calls to ExAllocatePoolWithTag to a function AllocateItem which is also responsible for zeroing memory
- Fix ISubDevice GUID
- don't disconnect the interrupt on cleanup, IInterruptSync_fnDisconnect exist for that purpose
- If there is no interrupt yet connected, call the synchronized routine holding the internal spinlock
- Copy the current stack location  when forwarding a Irp PcForwardIrpSynchronous
- Implement ISubdevice interface for IPortTopology
- Initialize the dpc for calling Miniport object, as it might create an interrupt object which immediately fires an interrupt
- If the caller doesnt provide an IAdapterPowerManagement interface, clear the existing reference
- Fix 2 bugs in IRegistryKey_NewSubKey which made the system crashing
- Pass the pdo to IoOpenDeviceRegistryKey
- Move all guids and IIDs to own file and initialize them
- portcls initializes now to the first interrupt fired (vbox+ICH AC97 driver | qemu+es1370 driver)

svn path=/trunk/; revision=38810