set targetsdk=11 on renderscript misc samples project

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

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

    package="com.android.samples">

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

    <application android:label="Samples"

    android:icon="@drawable/test_pattern">

        <activity android:name="RsList"