Handle tor addresses in addrmanager.
Handle tor addresses in addrmanager.

Both GroupKey and Tor() needed amending for tor addresses, filling in some
TODOs.

Closes #36.
Closes #37

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