Make --setup command independent
Make --setup command independent

A user can run 'gitian-build.py --setup' ignoring signer
and version options.
Get rid of warning about macOS build during setup for free.

mruddy/bitcoin,rnicoll/bitcoin,AkioNak/bitcoin,ahmedbodi/vertcoin,vertcoin/vertcoin,apoelstra/bitcoin,dscotese/bitcoin,tjps/bitcoin,ajtowns/bitcoin,rnicoll/dogecoin,midnightmagic/bitcoin,gjhiggins/vcoincore,particl/particl-core,anditto/bitcoin,apoelstra/bitcoin,JeremyRubin/bitcoin,tjps/bitcoin,rnicoll/bitcoin,nikkitan/bitcoin,lateminer/bitcoin,monacoinproject/monacoin,JeremyRubin/bitcoin,fanquake/bitcoin,alecalve/bitcoin,qtumproject/qtum,MarcoFalke/bitcoin,EthanHeilman/bitcoin,domob1812/namecore,CryptArc/bitcoin,mitchellcash/bitcoin,instagibbs/bitcoin,practicalswift/bitcoin,ajtowns/bitcoin,pstratem/bitcoin,jtimon/bitcoin,JeremyRubin/bitcoin,tecnovert/particl-core,andreaskern/bitcoin,monacoinproject/monacoin,andreaskern/bitcoin,namecoin/namecoin-core,n1bor/bitcoin,prusnak/bitcoin,lateminer/bitcoin,mitchellcash/bitcoin,DigitalPandacoin/pandacoin,Xekyo/bitcoin,bitcoinsSG/bitcoin,bitcoinknots/bitcoin,gjhiggins/vcoincore,fujicoin/fujicoin,andreaskern/bitcoin,sipsorcery/bitcoin,wellenreiter01/Feathercoin,peercoin/peercoin,sstone/bitcoin,vertcoin/vertcoin,namecoin/namecoin-core,yenliangl/bitcoin,jtimon/bitcoin,ajtowns/bitcoin,instagibbs/bitcoin,MeshCollider/bitcoin,practicalswift/bitcoin,wellenreiter01/Feathercoin,jnewbery/bitcoin,namecoin/namecoin-core,achow101/bitcoin,practicalswift/bitcoin,cdecker/bitcoin,AkioNak/bitcoin,kallewoof/bitcoin,namecoin/namecore,CryptArc/bitcoin,midnightmagic/bitcoin,monacoinproject/monacoin,peercoin/peercoin,dscotese/bitcoin,jambolo/bitcoin,MeshCollider/bitcoin,pataquets/namecoin-core,namecoin/namecoin-core,FeatherCoin/Feathercoin,DigitalPandacoin/pandacoin,lateminer/bitcoin,jtimon/bitcoin,apoelstra/bitcoin,bitcoinsSG/bitcoin,sipsorcery/bitcoin,litecoin-project/litecoin,apoelstra/bitcoin,cdecker/bitcoin,mm-s/bitcoin,anditto/bitcoin,prusnak/bitcoin,ahmedbodi/vertcoin,n1bor/bitcoin,EthanHeilman/bitcoin,fujicoin/fujicoin,nikkitan/bitcoin,gjhiggins/vcoincore,pstratem/bitcoin,qtumproject/qtum,tjps/bitcoin,kallewoof/bitcoin,domob1812/namecore,litecoin-project/litecoin,MarcoFalke/bitcoin,GroestlCoin/GroestlCoin,Xekyo/bitcoin,FeatherCoin/Feathercoin,Sjors/bitcoin,anditto/bitcoin,particl/particl-core,lateminer/bitcoin,jnewbery/bitcoin,jonasschnelli/bitcoin,prusnak/bitcoin,rnicoll/bitcoin,FeatherCoin/Feathercoin,Sjors/bitcoin,apoelstra/bitcoin,domob1812/namecore,wellenreiter01/Feathercoin,GroestlCoin/bitcoin,andreaskern/bitcoin,GroestlCoin/bitcoin,bitcoin/bitcoin,yenliangl/bitcoin,jlopp/statoshi,domob1812/bitcoin,mruddy/bitcoin,bitcoin/bitcoin,kallewoof/bitcoin,gjhiggins/vcoincore,gjhiggins/vcoincore,ahmedbodi/vertcoin,kallewoof/bitcoin,jtimon/bitcoin,instagibbs/bitcoin,midnightmagic/bitcoin,monacoinproject/monacoin,monacoinproject/monacoin,bitcoin/bitcoin,Xekyo/bitcoin,vertcoin/vertcoin,jtimon/bitcoin,apoelstra/bitcoin,DigitalPandacoin/pandacoin,ahmedbodi/vertcoin,Xekyo/bitcoin,nikkitan/bitcoin,Sjors/bitcoin,pataquets/namecoin-core,n1bor/bitcoin,DigitalPandacoin/pandacoin,kallewoof/bitcoin,GroestlCoin/bitcoin,mruddy/bitcoin,instagibbs/bitcoin,tjps/bitcoin,bitcoin/bitcoin,GroestlCoin/GroestlCoin,fanquake/bitcoin,Sjors/bitcoin,mm-s/bitcoin,fanquake/bitcoin,EthanHeilman/bitcoin,cdecker/bitcoin,prusnak/bitcoin,sipsorcery/bitcoin,dscotese/bitcoin,pstratem/bitcoin,jlopp/statoshi,sipsorcery/bitcoin,pstratem/bitcoin,domob1812/bitcoin,JeremyRubin/bitcoin,nikkitan/bitcoin,fanquake/bitcoin,achow101/bitcoin,mm-s/bitcoin,domob1812/namecore,achow101/bitcoin,instagibbs/bitcoin,jambolo/bitcoin,jamesob/bitcoin,andreaskern/bitcoin,MarcoFalke/bitcoin,prusnak/bitcoin,jlopp/statoshi,jnewbery/bitcoin,ElementsProject/elements,sstone/bitcoin,pataquets/namecoin-core,vertcoin/vertcoin,lateminer/bitcoin,jamesob/bitcoin,mruddy/bitcoin,anditto/bitcoin,alecalve/bitcoin,mm-s/bitcoin,jnewbery/bitcoin,particl/particl-core,MarcoFalke/bitcoin,ElementsProject/elements,fujicoin/fujicoin,GroestlCoin/bitcoin,tecnovert/particl-core,lateminer/bitcoin,rnicoll/dogecoin,n1bor/bitcoin,bitcoin/bitcoin,cdecker/bitcoin,EthanHeilman/bitcoin,achow101/bitcoin,mm-s/bitcoin,GroestlCoin/bitcoin,domob1812/bitcoin,EthanHeilman/bitcoin,vertcoin/vertcoin,tecnovert/particl-core,sstone/bitcoin,domob1812/namecore,tecnovert/particl-core,jonasschnelli/bitcoin,fujicoin/fujicoin,vertcoin/vertcoin,practicalswift/bitcoin,rnicoll/bitcoin,namecoin/namecoin-core,yenliangl/bitcoin,dscotese/bitcoin,rnicoll/dogecoin,cdecker/bitcoin,Xekyo/bitcoin,MarcoFalke/bitcoin,fanquake/bitcoin,DigitalPandacoin/pandacoin,wellenreiter01/Feathercoin,jlopp/statoshi,qtumproject/qtum,namecoin/namecore,litecoin-project/litecoin,particl/particl-core,tjps/bitcoin,fujicoin/fujicoin,midnightmagic/bitcoin,peercoin/peercoin,ajtowns/bitcoin,yenliangl/bitcoin,bitcoinsSG/bitcoin,midnightmagic/bitcoin,namecoin/namecoin-core,pataquets/namecoin-core,practicalswift/bitcoin,namecoin/namecore,jnewbery/bitcoin,cdecker/bitcoin,dscotese/bitcoin,achow101/bitcoin,litecoin-project/litecoin,namecoin/namecore,ajtowns/bitcoin,instagibbs/bitcoin,mitchellcash/bitcoin,domob1812/bitcoin,qtumproject/qtum,jamesob/bitcoin,ElementsProject/elements,Sjors/bitcoin,FeatherCoin/Feathercoin,yenliangl/bitcoin,anditto/bitcoin,GroestlCoin/GroestlCoin,alecalve/bitcoin,gjhiggins/vcoincore,AkioNak/bitcoin,achow101/bitcoin,ahmedbodi/vertcoin,jamesob/bitcoin,rnicoll/bitcoin,sipsorcery/bitcoin,bitcoinknots/bitcoin,EthanHeilman/bitcoin,GroestlCoin/GroestlCoin,monacoinproject/monacoin,GroestlCoin/GroestlCoin,AkioNak/bitcoin,CryptArc/bitcoin,mm-s/bitcoin,jamesob/bitcoin,dscotese/bitcoin,mruddy/bitcoin,bitcoinsSG/bitcoin,particl/particl-core,sstone/bitcoin,FeatherCoin/Feathercoin,jonasschnelli/bitcoin,kallewoof/bitcoin,sstone/bitcoin,jlopp/statoshi,qtumproject/qtum,tjps/bitcoin,ahmedbodi/vertcoin,andreaskern/bitcoin,AkioNak/bitcoin,alecalve/bitcoin,CryptArc/bitcoin,CryptArc/bitcoin,sipsorcery/bitcoin,jlopp/statoshi,yenliangl/bitcoin,ajtowns/bitcoin,sstone/bitcoin,MarcoFalke/bitcoin,rnicoll/dogecoin,n1bor/bitcoin,ElementsProject/elements,domob1812/bitcoin,jonasschnelli/bitcoin,GroestlCoin/GroestlCoin,jambolo/bitcoin,MeshCollider/bitcoin,DigitalPandacoin/pandacoin,domob1812/bitcoin,MeshCollider/bitcoin,GroestlCoin/bitcoin,wellenreiter01/Feathercoin,mitchellcash/bitcoin,tecnovert/particl-core,alecalve/bitcoin,MeshCollider/bitcoin,nikkitan/bitcoin,jonasschnelli/bitcoin,qtumproject/qtum,pataquets/namecoin-core,nikkitan/bitcoin,fanquake/bitcoin,namecoin/namecore,bitcoinknots/bitcoin,pataquets/namecoin-core,peercoin/peercoin,jamesob/bitcoin,alecalve/bitcoin,JeremyRubin/bitcoin,peercoin/peercoin,qtumproject/qtum,ElementsProject/elements,domob1812/namecore,bitcoinknots/bitcoin,bitcoin/bitcoin,MeshCollider/bitcoin,jambolo/bitcoin,jambolo/bitcoin,rnicoll/bitcoin,namecoin/namecore,pstratem/bitcoin,jambolo/bitcoin,n1bor/bitcoin,rnicoll/dogecoin,particl/particl-core,mitchellcash/bitcoin,bitcoinsSG/bitcoin,CryptArc/bitcoin,pstratem/bitcoin,tecnovert/particl-core,JeremyRubin/bitcoin,AkioNak/bitcoin,FeatherCoin/Feathercoin,litecoin-project/litecoin,ElementsProject/elements,midnightmagic/bitcoin,practicalswift/bitcoin,mitchellcash/bitcoin,litecoin-project/litecoin,peercoin/peercoin,mruddy/bitcoin,wellenreiter01/Feathercoin,jtimon/bitcoin,bitcoinknots/bitcoin,prusnak/bitcoin,fujicoin/fujicoin,Xekyo/bitcoin,anditto/bitcoin,bitcoinsSG/bitcoin