LazFileUtils: Add FileCreateUtf8(Const FileName : String; ShareMode : Integer; Rights : Cardinal) : THandle;
- Refactor code in winlazfileutils for FileCreateUtf8 to remove duplicate code.
- Use Utf8ToSys in the unix implementation.


git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41277 4005530d-fff6-0310-9dd1-cebe43e6787f