Merge pull request #1 from RaiMan/master

Pull recent changes in SikuliX
Simplified native library loading on Windows:
- $HOME/SikuliX/libs is added to current process's PATH, not to registry PATH, so no relogin is required
- class WinUtil loads WinUtil.dll automatically, so no need to do it manually when using Sikuli as a library
Merge pull request #6 from iirekm/master

Simplified native library loading on Windows