3.2.9.7

Mandatory Upgrade
MSI:
http://download.gridcoin.us/download/downloadstake/GridcoinResearch.msi

- As of block 89600, we move to the new POR2.0 Diff Algorithm (should
correct the diff problem very quickly)
- The diff algorithm should also correct the POR payment problem (since
the mintlimiter rule will then work correctly)