Build changes for updating Android SDK to 4.3.

build/android/ant/apk-codegen.xml

Index: build/android/ant/apk-codegen.xml
diff --git a/build/android/ant/apk-codegen.xml b/build/android/ant/apk-codegen.xml
index e60d6ca163cbd89aa932fd2941d034a6263b325b..23faed2fd851aea6ea20d8313e4cdad13db27a2a 100644
--- a/build/android/ant/apk-codegen.xml
+++ b/build/android/ant/apk-codegen.xml
@@ -29,12 +29,13 @@
   <property name="target" value="android-${ANDROID_SDK_VERSION}"/>
   <property name="android.tools.dir" location="${sdk.dir}/tools" />
   <property name="android.platform.tools.dir" location="${sdk.dir}/platform-tools" />
-  <property name="aapt" location="${android.platform.tools.dir}/aapt" />
+  <property name="android.sdk.build.tools.dir" location="${ANDROID_SDK_BUILD_TOOLS}" />
+  <property name="aapt" location="${android.sdk.build.tools.dir}/aapt" />
   <property name="project.target.android.jar" location="${ANDROID_SDK_JAR}" />
 
   <!-- jar file from where the tasks are loaded -->
   <path id="android.antlibs">
-      <pathelement path="${sdk.dir}/tools/lib/anttasks.jar" />
+      <pathelement path="${sdk.dir}/tools/lib/ant-tasks.jar" />
   </path>
 
   <!-- Custom tasks -->