[aur-general] Merge request: bittorrent-sync into btsync

Package bittorrent-sync[1] has been replaced by btsync[2] and btsync-autoconfig. Please merge [1] into [2] and remove [1]. [1]: https://aur.archlinux.org/packages/bittorrent-sync [2]: https://aur.archlinux.org/packages/btsync /Emil Lundberg, aka Lorde