Use application icon in WinSparkle dialogs.
Use application icon in WinSparkle dialogs.

Added the ability to automatically load application icon for the update
user interface if one is available. 48x48 size is used.
Fixed #3.

CaptainJackJJ/SmpUpdater,Herve-M/winsparkle,artillery/winsparkle,Herve-M/winsparkle,bristol-instruments/winsparkle,bristol-instruments/winsparkle,alamaison/winsparkle,drizt/winsparkle,CaptainJackJJ/SmpUpdater,dsuess/winsparkle,alamaison/winsparkle,artillery/winsparkle,nickdademo/winsparkle,drizt/winsparkle,nickdademo/winsparkle,dsuess/winsparkle