[Azoth Sarin] FileTransfer -> FileTransferIn.
[Azoth Sarin] Refactored base to FileTransferBase.
[Azoth Sarin] FileTransferOut stubs.
[Azoth Sarin] ToxAccount::GetByPubkey().
[Azoth Sarin] Accepting stubs.
[Azoth Sarin] Doh, I swapped FileTransfer{In,Out}.