[kbswitch] does not re-register it's systray icon after explorer-restart PATCH

patch is best practice taken from MSDN:
https://msdn.microsoft.com/en-us/library/windows/desktop/cc144179(v=vs.85).aspx#Taskbar_Creation_Not

PATCH:
kbswitch-does-not-restore-its-trayIcon-after-explorer-restart.patch
tested and working on XP SP3 and ros

Full Name:
Joachim Henze

Can anyone commit, please?