[#190] Implement setOwner method on Windows platforms.

Problem description
==============

There was no support for taking ownership of files and folders on Windows platforms.

Changes description
===============

Implemented support for taking ownership of files and folders when running with Administrator privileges.

Used MSDN reference from: http://msdn.microsoft.com/en-us/library/windows/desktop/aa379620(v=vs.85).aspx

How to try and test the changes
=======================

reviewers @adiroiban 

All tests should pass. I did a test_remote all and all looks ok.