title: Enable android:hardwareAccelerated, but build against a target earlier than 3.0
body: <p>I want to enable hardware acceleration for my android app, but I still want to build against Android 2.1 (in order to make sure I don't accidentally rely on APIs introduced in 3.0, for example). Is there anyway to turn on a feature and still build against a version before it was introduced? I know I can use reflection in code to check for say, an API added after my build target, but I'm not sure if I can do something similar for android:hardwareAccelerated. </p>