Fixing renderscript samples to properly declare targetSDK

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.android.balls">

    <uses-sdk android:minSdkVersion="11" />

    <application 

        android:label="Balls"

        android:icon="@drawable/test_pattern">

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.android.fountain">

    <uses-sdk android:minSdkVersion="11" />

    <application 

        android:label="Fountain"

        android:icon="@drawable/test_pattern">

    package="com.android.rs.image">

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />    

    <uses-sdk android:minSdkVersion="11" />

    <application android:label="Image Processing">

        <activity android:name="ImageProcessingActivity"

                  android:screenOrientation="portrait">