Updated all host mode demos and projects to use the EVENT_USB_Host_DeviceEnumerationComplete() event callback for device configuration instead of manual host state machine manipulations in the main application task.

Added new USB_Host_ConfigurationNumber global variable to indicate the selected configuration in an attached device.

Renamed global state variables that are specific to a certain USB mode to clearly indicate which mode the variable relates to, by changing the USB_* prefix to USB_Device_* or USB_Host_*.

Removed the HOST_STATE_WaitForDeviceRemoval and HOST_STATE_Suspended host state machine states, as these are no longer required.

Altered the USB_Host_SetDeviceConfiguration() function to update the new USB_Host_ConfigurationNumber global as required.

Moved out the Host mode standard request convenience/helper functions from the architecture specific Host driver files to the architecture agnostic HostStandardReq.c driver file.

LUFA/Drivers/USB/Core/USBTask.h

@@ -93,9 +93,8 @@
 					/** Indicates the current host state machine state. When in host mode, this indicates the state
 					 *  via one of the values of the \ref USB_Host_States_t enum values.
 					 *
-					 *  This value may be altered by the user application to implement the \ref HOST_STATE_Addressed,
-					 *  \ref HOST_STATE_Configured and \ref HOST_STATE_Suspended states which are not implemented by
-					 *  the library internally.
+					 *  This value should not be altered by the user application as it is handled automatically by the
+					 *  library.
 					 *
 					 *  To reduce program size and speed up checks of this global on the AVR8 architecture, it can be
 					 *  placed into one of the AVR's \c GPIOR hardware registers instead of RAM by defining the