Add a JNI boot test to catch ARM dynamic linker regressions.

webrtc/api/androidtests/AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.webrtc.test"
     android:versionCode="1"
     android:versionName="1.0" >
     <uses-feature android:name="android.hardware.camera" />
     <uses-feature android:name="android.hardware.camera.autofocus" />
     <uses-feature android:glEsVersion="0x00020000" android:required="true" />
 
     <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="21" />
 
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
     <uses-permission android:name="android.permission.RECORD_AUDIO" />
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
 
     <instrumentation
         android:name="android.test.InstrumentationTestRunner"
         android:targetPackage="org.webrtc.test" />
 
     <application
-        android:icon="@drawable/ic_launcher"
-        android:label="@string/app_name" >
+        android:label="AndroidPeerconnectionTests" >

[phoglund, 2016/11/15 15:55:38]

Note: I got rid of the resources, because all ways of using resource files
directly in tests are deprecated downstream. They're unnecessary here anyway
(unless the linter complains...)

         <uses-library android:name="android.test.runner" />
     </application>
 
 </manifest>