Added client methods CreateDirectory() and RemoveDirectory()
For better standard file system interface compatibility:
- Renamed CreateDirectory() to MkDir()
- Integrated RemoveDirectory() into Remove()
Fixed an error in marshalUint64() that resulted in incorrect marshalling of values >= 2^24
Added function Chtimes() to modify access and modification time of a file
Merge pull request #4 from claudiofelber/master

Added client methods CreateDirectory() and RemoveDirectory()