title: For android library projects, is <uses-sdk> meaningful in manifest?
body: <p>It's all pretty much in the title.  Although I see <code>&lt;uses-sdk&gt;</code> specified in all the example library project's <code>AndroidManifest.xml</code> I've seen, I have a feeling it's irrelevant.</p>
  
  <p>In fact, I suspect that <code>&lt;uses-permission&gt;</code> is also irrelevant, as are all of the attributes of <code>&lt;manifest&gt;</code>,  other than <code>package</code>.</p>
  
  <p>Can anyone confirm?</p>