Creating .pkg files for in-app purchases

Hello,

How do you create/convert files to .pkg (package) file format for in-app purchases in the Application Loader??? Apple used to support an application available as an additional tool in Xcode called "Package Maker". From what I see, they no longer include the app. So how do you create the .pkg files that Application Loader/Apple requires? HELP!!! <please>

Creating .pkg files for in-app purchases
 
 
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