Update kernel testnet checkpoint

src/kernel.cpp

@@ -27,7 +27,7 @@ static std::map<int, unsigned int> mapStakeModifierCheckpoints =
 // Hard checkpoints of stake modifiers to ensure they are deterministic (testNet)
 static std::map<int, unsigned int> mapStakeModifierCheckpointsTestNet =
     boost::assign::map_list_of
-        ( 10, 0x0e00670b )
+        ( 9999999999, 0x4038ad82 ) //technically two
     ;
 
 // Get time weight