scripted-diff: TxoutType C++11 scoped enum class

-BEGIN VERIFY SCRIPT-
 # General rename helper: $1 -> $2
 rename_global() { sed -i "s/\<$1\>/$2/g" $(git grep -l "$1"); }

 # Helper to rename TxoutType $1
 rename_value() {
   sed -i "s/    TX_$1,/    $1,/g" src/script/standard.h;  # First strip the prefix in the definition (header)
   rename_global TX_$1 "TxoutType::$1";                    # Then replace globally
 }

 # Change the type globally to bring it in line with the style-guide
 # (clsses are UpperCamelCase)
 rename_global 'enum txnouttype' 'enum class TxoutType'
 rename_global      'txnouttype'            'TxoutType'

 # Now rename each enum value
 rename_value 'NONSTANDARD'
 rename_value 'PUBKEY'
 rename_value 'PUBKEYHASH'
 rename_value 'SCRIPTHASH'
 rename_value 'MULTISIG'
 rename_value 'NULL_DATA'
 rename_value 'WITNESS_V0_KEYHASH'
 rename_value 'WITNESS_V0_SCRIPTHASH'
 rename_value 'WITNESS_UNKNOWN'

-END VERIFY SCRIPT-

src/wallet/rpcwallet.cpp

@@ -3489,7 +3489,7 @@ public:
     {
         // Always present: script type and redeemscript
         std::vector<std::vector<unsigned char>> solutions_data;
-        txnouttype which_type = Solver(subscript, solutions_data);
+        TxoutType which_type = Solver(subscript, solutions_data);
         obj.pushKV("script", GetTxnOutputType(which_type));
         obj.pushKV("hex", HexStr(subscript.begin(), subscript.end()));
 
@@ -3506,7 +3506,7 @@ public:
             // Always report the pubkey at the top level, so that `getnewaddress()['pubkey']` always works.
             if (subobj.exists("pubkey")) obj.pushKV("pubkey", subobj["pubkey"]);
             obj.pushKV("embedded", std::move(subobj));
-        } else if (which_type == TX_MULTISIG) {
+        } else if (which_type == TxoutType::MULTISIG) {
             // Also report some information on multisig scripts (which do not have a corresponding address).
             // TODO: abstract out the common functionality between this logic and ExtractDestinations.
             obj.pushKV("sigsrequired", solutions_data[0][0]);