fix in NSConcreteDirectoryEnumerator-initWithPath:
fix in NSConcreteDirectoryEnumerator-initWithPath:

The implementation was depending on the implementation of NSFileManager's -directoryContentsAtPath:.

berkus/cocotron,liruqi/cocotron,berkus/cocotron,liruqi/cocotron,liruqi/cocotron,liruqi/cocotron,berkus/cocotron,berkus/cocotron