Litecoin: bump version to 1.9.8.1
Litecoin: bump version to 1.9.8.1

pooler/electrum-ltc,pknight007/electrum-vtc,pknight007/electrum-vtc,vialectrum/vialectrum,pknight007/electrum-vtc,pooler/electrum-ltc,vialectrum/vialectrum,vialectrum/vialectrum,pknight007/electrum-vtc,pooler/electrum-ltc,pooler/electrum-ltc,vertcoin/electrum-vtc,vertcoin/electrum-vtc,vertcoin/electrum-vtc,vertcoin/electrum-vtc