PDMDriver: Fixed misused AssertLogRelReturn(). Thank you Jung-uk Kim.

PDM,USB: Add methods to detach and attach drivers to USB devices during runtime, add fFlags parameter to pfnDriver{Detach|Attach} to indicate whether this is a hotplug event or not, use a preconfigured UUID during device instantiation to make removing the device during runtime possible

PDM: init fVMSuspended for USB devices and a todo.

VMM: Suspend and resume reasons.

STAMR3Deregister* optimizations. Relevant for both startup and shutdown times.

VMM,DevVGA: Don't resolve RC symbols when HM is enabled (part 1).

PDMCritSectRw: Early morphing stage - untested, ring-3 only.

PDMAsyncCompletion: PVM -> PUVM (one instance), internalize internal APIs where possible (not all because of test cases). API docs lives where the implmentation lives, NOT in headers (IPRT is the exception).

PDMNetShaper: Cleanups & fixes (untested). PVM -> PUVM. Note: cs is a register within the VMM, not critical section. :)

PDMDriver.cpp: (C)

PDMDriver.cpp: Don't assert when trying to attach driver at a configured LUN without any driver attached. Happens when there is no network driver attached to a NIC.

PDMDriver: Changed to much, the name we must get via the internal structure (for paranoid reasons).

PDMDriver: Changed the previous fix to use the top level device registration structure pointer instead of the internal one. That's what we're doing elsewhere.

PDMDriver.cpp: A pLun can be used with a normal device or a usb device, check if pDevIns is NULL to find out which it is.

Doxygen.

Doxygen.

Doxygen, comment typos.

Set the idTracing members.

NetShaper,E1000: Basic framework and partial implementation for network shaper

Introduced VBOX_WITH_REM in Config.kmk and the VMM.

PDMDriver: Forgot.

PDM: Extended the driver chain transformations with a mergeconfig action (untested). Fixed some basic bugs.

PDM: Initial driver chain transformation code (untested).

PDM,Devices,Drivers: Add async discard API and make us of it

PDM: Enter the device critical section for PDM callback.

Fixed a uninitialized variable in a PDM driver method used by VBoxBFE to register its statically linked drivers. Renamed the method.

VMM: Replace most VERR_VERSION_MISMATCH by more specific error statuses. Translating the errors returned by device, driver and USB device constructors into specific ones for the benefit of old extension pack and misc use of the status.

VMM reorg: Moving the public include files from include/VBox to include/VBox/vmm.

VMM source reorg.