message: [Core] Make bnProofOfStakeLimit_V2 16 times v1 limit
diff: @@ -174,7 +174,7 @@ public:
  nDefaultPort = 51472;
  bnProofOfWorkLimit = ~uint256(0) >> 20; // PIVX starting difficulty is 1 / 2^12
  bnProofOfStakeLimit = ~uint256(0) >> 24;
  - bnProofOfStakeLimit_V2 = ~uint256(0) >> 48;
  + bnProofOfStakeLimit_V2 = ~uint256(0) >> 20; // 60/4 = 15 ==> use 2**4 higher limit
  nSubsidyHalvingInterval = 210000;
  nMaxReorganizationDepth = 100;
  nEnforceBlockUpgradeMajority = 8100; // 75%
  