Check if a new version got installed after usb disconnect and ask if user wants to reboot. Causes  disk spinup before showing the usb logo. Also fixes do_menu() not returning to root_menu after usb disconnect.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12972 a1c6a512-1295-4272-9138-f99709370657
5 files changed