Move files.

test/libsolidity/semanticTests/array/string_bytes_conversion.sol

@@ -0,0 +1,17 @@
+contract Test {
+    string s;
+    bytes b;
+
+    function f(string memory _s, uint256 n) public returns (bytes1) {
+        b = bytes(_s);
+        s = string(b);
+        return bytes(s)[n];
+    }
+
+    function l() public returns (uint256) {
+        return bytes(s).length;
+    }
+}
+// ----
+// f(string,uint256): 0x40, 0x02, 0x06, "abcdef" -> "c"
+// l() -> 0x06