consensus verified for MSC & TMSC vs Omni with disable_Divs=1, july 30th; changes:
* explicitly disallow 0 amount changes to the tally map (+0 or -0)
* disallow any explicit requests for BTC (currency 0)
* more intelligent coin control selections to accomodate a TX with upper bound of 20KBytes (e.g. 100 inputs + 40 outputs require 8Kbytes); more changes coming after the beta
* add bDeleteFound option to isMPinBlockRange()
* start using GetHeight() of chainActive within our code to prepare for breakout mode
Merge with upstream