Update msoffice samples with two MSDN demos and test compatibility

The office samples were verified for these environments:

Platform Windows 10 64Bit:

* Java 1.8.0_77 64 Bit + Office 2013 64 Bit (Testversion)
* Java 1.8.0_77 32 Bit + Office 2013 64 Bit (Testversion)

Platform Windows 7 64Bit:

* Java 1.8.0_60 64 Bit + Office 2007 32 Bit
* Java 1.8.0_60 32 Bit + Office 2007 32 Bit

Closes #572

CHANGES.md

@@ -51,6 +51,7 @@ Features
 * [#640](https://github.com/java-native-access/jna/pull/640): Add `com.sun.jna.platform.win32.Psapi.GetPerformanceInfo()`, `com.sun.jna.platform.win32.Kernel32.GetTickCount64()`, and `com.sun.jna.platform.win32.Kernel32.SetErrorMode()` - [@dbwiddis](https://github.com/dbwiddis).
 * [#642](https://github.com/java-native-access/jna/pull/642): COM calls with variable number of arguments (varargs) are now supported - [@SevenOf9Sleeper](https://github.com/SevenOf9Sleeper).
 * [#644](https://github.com/java-native-access/jna/pull/644): New ant target 'install' for installing JNA artifacts in local m2-repository - [@SevenOf9Sleeper](https://github.com/SevenOf9Sleeper).
+* [#649](https://github.com/java-native-access/jna/pull/649): Bugfix msoffice sample and add two samples taken from MSDN and translated from VisualBasic to Java  - [@matthiasblaesing](https://github.com/matthiasblaesing).
 
 Bug Fixes
 ---------
@@ -66,7 +67,7 @@ Bug Fixes
 * [#602](https://github.com/java-native-access/jna/pull/602): Make sure SID related memory is properly released once no longer required [@lgoldstein](https://github.com/lgoldstein).
 * [#610](https://github.com/java-native-access/jna/pull/610): Fixed issue #604: Kernel32#GetLastError() always returns ERROR_SUCCESS [@lgoldstein](https://github.com/lgoldstein).
 * [#633](https://github.com/java-native-access/jna/pull/633): Restore default usage of platform native encoding for Java strings passed to native functions (was hard-coded to UTF-8 in 4.0 and later) [@amake](https://github.com/amake)
-* [#634](https://github.com/java-native-access/jna/pull/634): Improve BSTR handling - [@matthiasblaesing](https://github.com/matthiasblaesing).
+* [#634](https://github.com/java-native-access/jna/pull/634): Improve BSTR handling and add `SysStringByteLen` and `SysStringLen` to `com.sun.jna.platform.win32.OleAuto` - [@matthiasblaesing](https://github.com/matthiasblaesing).
 
 Release 4.2.1
 =============