adding upmargin to exchange abi

contracts/exchange/exchange.abi

@@ -21,6 +21,16 @@
         {"name":"contract", "type":"account_name"}
       ]
     },
+    {
+      "name": "upmargin",
+      "base": "",
+      "fields": [
+        {"name":"borrower",         "type":"account_name"},
+        {"name":"market",           "type":"symbol"}
+        {"name":"delta_borrow",     "type":"extended_asset"}
+        {"name":"delta_collateral", "type":"extended_asset"}
+      ]
+    },
     {
       "name": "lend",
       "base": "",
@@ -123,6 +133,7 @@
     { "name": "issue", "type": "issue" }, 
     { "name": "lend", "type": "lend" }, 
     { "name": "unlend", "type": "unlend" }, 
+    { "name": "upmargin", "type": "upmargin" }, 
     { "name": "create", "type": "create" }
   ],
   "tables": [{

contracts/exchange/exchange.hpp

@@ -82,12 +82,12 @@ namespace eosio {
          };
 
          struct upmargin {
-            symbol_type      market;
             account_name     borrower;
+            symbol_type      market;
             extended_asset   delta_borrow;
             extended_asset   delta_collateral;
 
-            EOSLIB_SERIALIZE( upmargin, (market)(borrower)(delta_borrow)(delta_collateral) )
+            EOSLIB_SERIALIZE( upmargin, (borrower)(market)(delta_borrow)(delta_collateral) )
          };
 
          struct trade {