Add OpenBSD support to util.py
Add OpenBSD support to util.py

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