I just set up the Eclipse included in the Android Development Tools (ADT), the adt-bundle-mac-x86_64-20131030 version. Setting the property in the manifest file gave me a warning saying that it would be better to set up different Run and Debug configurations. It turns out that I simply needed to create a debugging profile:
- Run >> Debug Configurations...
- Click "Debug" to take the defaults
Now you can go to Run >> Debug to run on the device. (Assuming that the device has debugging enabled, of course)
If you are an Eclipse or ADT developer and are reading this, I strongly suggest that Eclipse create a debugging configuration by default.