Bundle new BitTorrent Sync version: 1.4.110

[ifireball]

Need to find a way to get notified about BitTorrent Sync releases

[ifireball]

tuxpoldo/btsync-deb#174 indicates that btsync 1.4.110 does not inter-operate properly with 1.4.103.
Blocking this issue until version is updated there to maintain interoperability with the Debian packages.