Made the DirectoryStream used in directoryIsEmpty a try-resource, so it is automatically released no matter what happens.
Fixed implementation of GlusterDirectoryIterator to properly skip over the special entries of "." and "..".
Added tests for directoryIsEmpty.
Added tests for changes in advance().
Added tests for changes in advance().
Added switch cases in the advanceHelper method.
Merge pull request #7 from FIU-SCIS-Senior-Project-2014-Fall/dirisempty

Dirisempty