Alpha release - March 2014 - Update

wiasane: Fixed polling of device state at interval of 20 seconds (#9)
wiasane: Fixed mixed indentation
wiasane: Reordered internal functions
wiasane: Fixed SAL annotations
wiasane: Optimized entry conditions
wiasane: Fixed inconsistent SAL annotations
wiasane: Optimized entry conditions
wiasane: Re-grouped registry information functions
wiasane: Renamed scanner session functions
winsane: Close device if open within deconstructor
wiasane: Added check for supported data types
wiasane: Decouple local WIA interface from the network connection