modify TALER_EXCHANGE_deposits_get() API to combine returned arguments into a struct (simplifies merchant later)

src/include/taler_exchange_service.h

@@ -1722,6 +1722,7 @@ struct TALER_EXCHANGE_DepositData
    * yet execute the transaction
    */
   struct TALER_Amount coin_contribution;
+
 };
 
 

src/testing/testing_api_cmd_deposits_get.c

@@ -112,6 +112,7 @@ deposit_wtid_cb (void *cls,
   {
   case MHD_HTTP_OK:
     tts->wtid = dd->wtid;
+
     if (NULL != tts->bank_transfer_reference)
     {
       const struct TALER_TESTING_Command *bank_transfer_cmd;