Sort tests.

test/libsolidity/semanticTests/various/nested_calldata_struct.sol

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+pragma experimental ABIEncoderV2;
+
+
+contract C {
+    struct S1 {
+        uint256 a;
+        uint256 b;
+    }
+    struct S2 {
+        uint256 a;
+        uint256 b;
+        S1 s;
+        uint256 c;
+    }
+
+    function f(S2 calldata s)
+        external
+        pure
+        returns (uint256 a, uint256 b, uint256 sa, uint256 sb, uint256 c)
+    {
+        return (s.a, s.b, s.s.a, s.s.b, s.c);
+    }
+}
+
+// ----
+// f((uint256,uint256,(uint256,uint256),uint256)): 1, 2, 3, 4, 5 -> 1, 2, 3, 4, 5