Android: Updating source compile android.jar library to rev19. Developers, don't forget to use Build.VERSION.SDK_INT to check for the OS version when using Android features added after rev9. Base version of Android supported by jME 3.1 will be rev9 (Android 2.3).

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@10905 75d07b2b-3a1a-0410-a2c5-0572b91ccdca