Litecoin: bump version to 2.4.0.2
Litecoin: bump version to 2.4.0.2

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