Directory Separator on Windows

[Santana1053]

When executing this from a Windows PHP environment, the DIRECTORY_SEPARATOR constant is defined as \, however with SFTP the directory separator should ALWAYS be /. Otherwise a file that should go in Folder1 > Folder2 > MyFile ends up uploading like "Folder1\Folder2\MyFile" as the entire filename instead of being in the directories.

[peter279k]

To avoid this issue, I think we have to use the / instead.