Fixed inconsistent minSdkVersion and target= in NDK samples

Also removed Dummy.java and auto-gen files
Inspired by http://code.google.com/p/android/issues/detail?id=20017

Change-Id: I5a59c86b8b85c15eccca3b3157459b70a4815684

ndk/platforms/android-14/samples/native-media/project.properties

@@ -1,13 +0,0 @@
-# This file is automatically generated by Android Tools.
-# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
-#
-# This file must be checked in Version Control Systems.
-#
-# To customize properties used by the Ant build system use,
-# "ant.properties", and override values to adapt the script to your
-# project structure.
-
-# Indicates whether an apk should be generated for each density.
-split.density=false
-# Project target.
-target=android-14

ndk/platforms/android-8/samples/bitmap-plasma/default.properties

@@ -8,4 +8,4 @@
 # project structure.
 
 # Project target.
-target=android-9
+target=android-8

ndk/platforms/android-9/samples/native-activity/default.properties

@@ -8,4 +8,4 @@
 # project structure.
 
 # Project target.
-target=android-7
+target=android-9

ndk/platforms/android-9/samples/native-plasma/AndroidManifest.xml

@@ -3,7 +3,7 @@
       package="com.example.native_plasma"
       android:versionCode="1"
       android:versionName="1.0">
-    <uses-sdk android:minSdkVersion="8" />
+    <uses-sdk android:minSdkVersion="9" />
     <application android:label="@string/app_name"
                  android:hasCode="false" android:debuggable="true">
         <activity android:name="android.app.NativeActivity"

ndk/platforms/android-9/samples/native-plasma/default.properties

@@ -8,4 +8,4 @@
 # project structure.
 
 # Project target.
-target=android-7
+target=android-9

ndk/platforms/android-9/samples/native-plasma/src/Dummy.java

@@ -1,4 +0,0 @@
-// Temporary until the NDK build system can deal with there being no Java source.
-class Dummy {
-
-}

ndk/samples/hello-jni/default.properties

@@ -8,4 +8,4 @@
 # project structure.
 
 # Project target.
-target=android-8
+target=android-3

ndk/samples/hello-neon/AndroidManifest.xml

@@ -3,6 +3,7 @@
       package="com.example.neon"
       android:versionCode="1"
       android:versionName="1.0">
+    <uses-sdk android:minSdkVersion="4" />
     <application android:label="@string/app_name">
         <activity android:name=".HelloNeon"
                   android:label="@string/app_name">

ndk/samples/hello-neon/default.properties

@@ -8,4 +8,4 @@
 # project structure.
 
 # Project target.
-target=android-3
+target=android-4