Fix priority calculation in CreateTransaction
Fix priority calculation in CreateTransaction

Make this projection of priority in 1 block match the calculation in the low priority reject code.
GregoryBetz/DarkSilk,GregoryBetz/DarkSilk,GregoryBetz/DarkSilk,GregoryBetz/DarkSilk,GregoryBetz/DarkSilk,GregoryBetz/DarkSilk-Release-Candidate,GregoryBetz/DarkSilk-Release-Candidate,GregoryBetz/DarkSilk,GregoryBetz/DarkSilk-Release-Candidate,GregoryBetz/DarkSilk-Release-Candidate,GregoryBetz/DarkSilk-Release-Candidate,GregoryBetz/DarkSilk-Release-Candidate