bench: make EvictionProtection.* work with any number of iterations
bench: make EvictionProtection.* work with any number of iterations

Moves copying of the setup into the benchmark loop so it is possible
to run the loop for an arbitrary number of times.

The overhead due to copying the candidates inside the loop is about 3%.

jamesob/bitcoin,domob1812/bitcoin,domob1812/namecore,pataquets/namecoin-core,bitcoinknots/bitcoin,dscotese/bitcoin,lateminer/bitcoin,namecoin/namecore,namecoin/namecoin-core,namecoin/namecore,domob1812/namecore,bitcoinknots/bitcoin,dscotese/bitcoin,jlopp/statoshi,jambolo/bitcoin,achow101/bitcoin,jlopp/statoshi,bitcoinsSG/bitcoin,sipsorcery/bitcoin,MarcoFalke/bitcoin,jambolo/bitcoin,ajtowns/bitcoin,sipsorcery/bitcoin,sstone/bitcoin,fujicoin/fujicoin,namecoin/namecoin-core,bitcoinknots/bitcoin,jambolo/bitcoin,prusnak/bitcoin,ajtowns/bitcoin,sstone/bitcoin,namecoin/namecoin-core,fujicoin/fujicoin,fujicoin/fujicoin,achow101/bitcoin,AkioNak/bitcoin,pataquets/namecoin-core,jambolo/bitcoin,kallewoof/bitcoin,jlopp/statoshi,Xekyo/bitcoin,jlopp/statoshi,bitcoinsSG/bitcoin,andreaskern/bitcoin,bitcoinsSG/bitcoin,AkioNak/bitcoin,sipsorcery/bitcoin,mruddy/bitcoin,particl/particl-core,ajtowns/bitcoin,mruddy/bitcoin,prusnak/bitcoin,tecnovert/particl-core,jambolo/bitcoin,kallewoof/bitcoin,sipsorcery/bitcoin,prusnak/bitcoin,jamesob/bitcoin,Xekyo/bitcoin,GroestlCoin/bitcoin,fujicoin/fujicoin,particl/particl-core,GroestlCoin/GroestlCoin,domob1812/namecore,namecoin/namecore,domob1812/namecore,GroestlCoin/bitcoin,instagibbs/bitcoin,fanquake/bitcoin,MarcoFalke/bitcoin,bitcoin/bitcoin,sstone/bitcoin,sstone/bitcoin,tecnovert/particl-core,anditto/bitcoin,kallewoof/bitcoin,MarcoFalke/bitcoin,Xekyo/bitcoin,namecoin/namecore,prusnak/bitcoin,lateminer/bitcoin,jamesob/bitcoin,ajtowns/bitcoin,fujicoin/fujicoin,dscotese/bitcoin,namecoin/namecoin-core,dscotese/bitcoin,domob1812/namecore,anditto/bitcoin,domob1812/bitcoin,jamesob/bitcoin,fanquake/bitcoin,GroestlCoin/bitcoin,fanquake/bitcoin,domob1812/namecore,mm-s/bitcoin,anditto/bitcoin,AkioNak/bitcoin,Xekyo/bitcoin,prusnak/bitcoin,GroestlCoin/GroestlCoin,bitcoin/bitcoin,pataquets/namecoin-core,instagibbs/bitcoin,tecnovert/particl-core,MarcoFalke/bitcoin,jamesob/bitcoin,bitcoinsSG/bitcoin,achow101/bitcoin,tecnovert/particl-core,pataquets/namecoin-core,mruddy/bitcoin,MarcoFalke/bitcoin,mruddy/bitcoin,lateminer/bitcoin,prusnak/bitcoin,andreaskern/bitcoin,mm-s/bitcoin,bitcoinsSG/bitcoin,mm-s/bitcoin,GroestlCoin/GroestlCoin,GroestlCoin/GroestlCoin,fujicoin/fujicoin,lateminer/bitcoin,particl/particl-core,lateminer/bitcoin,bitcoin/bitcoin,mm-s/bitcoin,achow101/bitcoin,Xekyo/bitcoin,namecoin/namecore,lateminer/bitcoin,dscotese/bitcoin,kallewoof/bitcoin,particl/particl-core,sstone/bitcoin,fanquake/bitcoin,fanquake/bitcoin,mm-s/bitcoin,anditto/bitcoin,domob1812/bitcoin,sipsorcery/bitcoin,bitcoinknots/bitcoin,fanquake/bitcoin,kallewoof/bitcoin,achow101/bitcoin,anditto/bitcoin,domob1812/bitcoin,achow101/bitcoin,particl/particl-core,namecoin/namecore,GroestlCoin/bitcoin,bitcoin/bitcoin,namecoin/namecoin-core,bitcoin/bitcoin,particl/particl-core,AkioNak/bitcoin,domob1812/bitcoin,GroestlCoin/bitcoin,kallewoof/bitcoin,bitcoinknots/bitcoin,andreaskern/bitcoin,MarcoFalke/bitcoin,jlopp/statoshi,instagibbs/bitcoin,tecnovert/particl-core,GroestlCoin/GroestlCoin,bitcoin/bitcoin,AkioNak/bitcoin,GroestlCoin/GroestlCoin,jambolo/bitcoin,mm-s/bitcoin,pataquets/namecoin-core,mruddy/bitcoin,jamesob/bitcoin,ajtowns/bitcoin,andreaskern/bitcoin,AkioNak/bitcoin,instagibbs/bitcoin,domob1812/bitcoin,sstone/bitcoin,andreaskern/bitcoin,sipsorcery/bitcoin,instagibbs/bitcoin,ajtowns/bitcoin,andreaskern/bitcoin,anditto/bitcoin,Xekyo/bitcoin,pataquets/namecoin-core,tecnovert/particl-core,namecoin/namecoin-core,instagibbs/bitcoin,GroestlCoin/bitcoin,dscotese/bitcoin,bitcoinsSG/bitcoin,jlopp/statoshi,mruddy/bitcoin