Modify code to use proxy aware NetAddresses.
Modify code to use proxy aware NetAddresses.

This paves the way for support with proxied connections.

mathiasrw/btcd,Dirbaio/btcd,sysbot/btcd,wallclockbuilder/btcd,jongillham/btcd,jrick/btcd,sysbot/btcd,runeaune/btcd,davecgh/btcd,runeaune/btcd,dajohi/btcd,jongillham/btcd,Cleawing/btcd,pkothbauer/btcd,jrick/btcd,Stash-Crypto/btcd,Dirbaio/btcd,CryptocurrencyCabal/htcd,cqswxj2013/btcd,dajohi/btcd,toddfries/btcd,hectorj/btcd,Roasbeef/btcd,btcsuite/btcd,DanielKrawisz/btcd,toddfries/btcd,adiabat/btcd,qchain/btcd,FactomProject/btcd,jimmysong/btcd,stevenroose/btcd,1d4Nf6/btcd,glv2/ppcd,danoctavian/btcd,cqswxj2013/btcd,1d4Nf6/btcd,glv2/ppcd,Cleawing/btcd,soapboxsys/ombfullnode,jrick/btcd,hectorj/btcd,ppcsuite/ppcd,jcmincke/dcrd,davecgh/btcd,jimmysong/btcd,ltcsuite/ltcd,cjepson/btcd,pkothbauer/btcd,ppcsuite/ppcd-old,decred/dcrd,Stash-Crypto/btcd,Evil-Coin/Evil,jrick/dcrd,cjepson/btcd,aakselrod/btcd,FactomProject/btcd,Evil-Coin/Evil,BitGo/prova,wallclockbuilder/btcd,soapboxsys/ombfullnode,adiabat/btcd,btcsuite/btcd,Roasbeef/btcd,ppcsuite/ppcd-old,BitGo/prova,ltcsuite/ltcd,tb00/btcd,dajohi/btcd,qchain/btcd,aakselrod/btcd,dan-da/btcd,jcmincke/dcrd,DanielKrawisz/btcd,decred/dcrd,ppcsuite/ppcd,dan-da/btcd,Dirbaio/btcd,mathiasrw/btcd,CryptocurrencyCabal/htcd,btcsuitereleases/btcd,btcsuitereleases/btcd,stevenroose/btcd,danoctavian/btcd,jrick/dcrd,tb00/btcd,jcmincke/dcrd