Add CashAddr Address Format

Ported from Bitcoin Unlimited, Bitcoin ABC

src/rpc/mining.cpp

@@ -9,6 +9,7 @@
 #include "consensus/consensus.h"
 #include "consensus/validation.h"
 #include "core_io.h"
+#include "dstencode.h"
 #include "init.h"
 #include "main.h"
 #include "miner.h"
@@ -226,6 +227,16 @@ UniValue setgenerate(const UniValue& params, bool fHelp)
 
     mapArgs["-gen"] = (fGenerate ? "1" : "0");
     mapArgs ["-genproclimit"] = itostr(nGenProcLimit);
+    
+    CTxDestination destination = DecodeDestination(params[1].get_str());
+    if (!IsValidDestination(destination)) {
+        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
+                           "Error: Invalid address");
+    }
+
+    boost::shared_ptr<CReserveScript> coinbaseScript(new CReserveScript());
+    coinbaseScript->reserveScript = GetScriptForDestination(destination);
+    
     GenerateBitcoins(fGenerate, nGenProcLimit, Params());
 
     return NullUniValue;