title: Xpath to select value of sibling attribute with namespace
body: <p>I'm struggling to get an XPath defined to return the value of the <code>uniqueappversionid</code> from the following XML:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;manifest package="air.com.vzw.Foo" 
            android:versionCode="0" 
            android:versionName="0.0.0" 
            android:installLocation="auto"
            xmlns:android="http://schemas.android.com/apk/res/android"&gt;
      &lt;application android:label="FooAIR"&gt;
          &lt;meta-data android:name="autoOrients" android:value="true" /&gt;
          &lt;meta-data android:name="fullScreen" android:value="false" /&gt;
          &lt;meta-data android:name="uniqueappversionid" 
                     android:value="b1e1bfa8-20b4-4724-a9c3-34b79bc50b8d" /&gt;
          &lt;meta-data android:name="initialcontent" android:value="FooAIR.swf" /&gt;
      &lt;/application&gt;
  &lt;/manifest&gt;
  </code></pre>
  
  <p>More specifically, I need to get the value of the <code>android:value</code> attribute from the <code>meta-data</code> element with a <code>android:name</code> equal to <code>uniqueappversionid</code>.</p>