TheRevZipper

Modified revzipper for empty folders

I downloaded the zip unzip stack of the RunRev tutorial:
http://www.runrev.com/developers/lessons-and-tutorials/tutorials/advanced-zip-tool/

I slightly modified it trying to make it zip and unzip empty folders too.
Now it works on the OSX but it does not zip empty folder under Windows 7.
I spent a day trying to find the reason...
It simply returns an error in the result (no such file) of "revZipAddItemWithFile" if thepName is a Folder instead of a file.
Sometimes it badly crash!

If someone wants to take it over......