Fix build with usb-moded support enabled

After a change in 537577bf USBModedProxy wasn't built even though it was
enabled in qmake configuration. This broke handling of USB
connect/disconnect events and made MTP plugin unusable.
Merge pull request #55 from xhaakon/usb-moded-fix

Fix build with usb-moded support enabled
[buteo-syncfw] Bump version for update8

Bump version for update8 with mtp / usbmoded fix