[validation/refactor] store precomputed txdata in workspace
[validation/refactor] store precomputed txdata in workspace

We want to be able to re-use the precomputed transaction data between
PolicyScriptChecks and ConsensusScriptChecks in
AcceptMultipleTransactions.

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