fix setup.py to make `pip install --user` possible in Linux
fix setup.py to make `pip install --user` possible in Linux

added one more fallback to a local directory inside user's HOME, because
/usr/share/electrum for Linux was hardcoded in lib/util.py - see function
appdata_dir()

pknight007/electrum-vtc,molecular/electrum,vertcoin/electrum-vtc,imrehg/electrum,fireduck64/electrum,cryptapus/electrum-uno,kyuupichan/electrum,cryptapus/electrum,fireduck64/electrum,vertcoin/electrum-vtc,procrasti/electrum,vertcoin/electrum-vtc,cryptapus/electrum-uno,dashpay/electrum-dash,protonn/Electrum-Cash,romanz/electrum,spesmilo/electrum,procrasti/electrum,argentumproject/electrum-arg,vialectrum/vialectrum,aasiutin/electrum,lbryio/lbryum,cryptapus/electrum-myr,argentumproject/electrum-arg,cryptapus/electrum,fujicoin/electrum-fjc,protonn/Electrum-Cash,imrehg/electrum,spesmilo/electrum,wakiyamap/electrum-mona,cryptapus/electrum-uno,wakiyamap/electrum-mona,procrasti/electrum,fyookball/electrum,fyookball/electrum,digitalbitbox/electrum,pooler/electrum-ltc,kyuupichan/electrum,FairCoinTeam/electrum-fair,pknight007/electrum-vtc,asfin/electrum,pooler/electrum-ltc,dashpay/electrum-dash,protonn/Electrum-Cash,pknight007/electrum-vtc,fujicoin/electrum-fjc,fireduck64/electrum,aasiutin/electrum,dabura667/electrum,pooler/electrum-ltc,procrasti/electrum,cryptapus/electrum-myr,dashpay/electrum-dash,digitalbitbox/electrum,kyuupichan/electrum,cryptapus/electrum-myr,wakiyamap/electrum-mona,protonn/Electrum-Cash,dabura667/electrum,vertcoin/electrum-vtc,dabura667/electrum,molecular/electrum,argentumproject/electrum-arg,FairCoinTeam/electrum-fair,spesmilo/electrum,pooler/electrum-ltc,cryptapus/electrum,aasiutin/electrum,dashpay/electrum-dash,neocogent/electrum,wakiyamap/electrum-mona,digitalbitbox/electrum,cryptapus/electrum-myr,imrehg/electrum,asfin/electrum,aasiutin/electrum,vialectrum/vialectrum,vialectrum/vialectrum,molecular/electrum,imrehg/electrum,dabura667/electrum,spesmilo/electrum,fyookball/electrum,fireduck64/electrum,neocogent/electrum,FairCoinTeam/electrum-fair,neocogent/electrum,fujicoin/electrum-fjc,asfin/electrum,FairCoinTeam/electrum-fair,lbryio/lbryum,molecular/electrum,romanz/electrum,romanz/electrum,argentumproject/electrum-arg,pknight007/electrum-vtc,digitalbitbox/electrum,cryptapus/electrum-uno