C# std::array changes file addition

Fix C# warnings in test-case too.

CHANGES.current

@@ -5,6 +5,12 @@ See the RELEASENOTES file for a summary of changes in each release.
 Version 3.0.11 (in progress)
 ============================
 
+2016-10-30: myd7349
+            [C#] Patch #740 Add std_array.i for C# for wrapping std::array.
+
+            Patch also enhances std::vector<std::wstring> C# wrappers with additional functions
+            (Contains, IndexOf, LastIndexOf and Remove).
+
 2016-10-30: tobilau
             [Java] Fix wrappers for wstring parameters in director methods to cleanup local
             ref after director callback has finished.