I added android-support-v7-appcompat. Next I clicked on each file in directory \\libs. Then I clicked android-support-v7-appcompat and opened properties. Next checked files
Documentation for the new backwards-compatible ActionBar is at http://developer.android.com/guide/topics/ui/actionbar.html
To install the necessary library, follow the instructions at http://developer.android.com/tools/support-library/setup.html
Follow the instructions closely. You need the appcompat library, but the classes themselves are in android.support.v7.app.