[validation] cache iterators to mempool conflicts
[validation] cache iterators to mempool conflicts

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