I believe eclipse had a case of the crashes and something weird happened. I restarted the project and have done everything I can think of from scratch.
The code and conf
Try running android update project on the play services lib.
Beyond that, I would delete google_play_services and get a fresh copy from the Android SDK manager.
The problem is that you don't have a build.xml file google-play-services_lib folder
To create that file you need to Go to the system SK Directory
$SDK_HOME/extras/google/google_play_services/libproject/google-play-services_lib and run "android update project -p ./ --target 20"
Change the target as needed.
Running
android update project --path .
on the google_play_services directory fixed this exact problem for me.