[Android] Set build.is.packaging.debug correctly

build/android/ant/apk-package-resources.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <!--
     Copyright (C) 2005-2008 The Android Open Source Project
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
     You may obtain a copy of the License at
 
          http://www.apache.org/licenses/LICENSE-2.0
 
@@ skipping 21 matching lines @@
     <pathelement path="${sdk.dir}/tools/lib/anttasks.jar" />
   </path>
 
   <!-- Custom tasks -->
   <taskdef resource="anttasks.properties" classpathref="android.antlibs" />
 
   <condition property="build.target" value="release" else="debug">
     <equals arg1="${CONFIGURATION_NAME}" arg2="Release" />
   </condition>
   <condition property="build.is.packaging.debug" value="true" else="false">
-    <equals arg1="build.target" arg2="debug" />
+    <equals arg1="${build.target}" arg2="debug" />
   </condition>
 
   <property name="resource.dir" value="${RESOURCE_DIR}"/>
   <property name="resource.absolute.dir" location="${resource.dir}"/>
 
   <property name="asset.dir" value="${ASSET_DIR}" />
   <property name="asset.absolute.dir" location="${asset.dir}" />
 
   <property name="aapt" location="${android.platform.tools.dir}/aapt" />
 
@@ skipping 71 matching lines @@
         ignoreAssets="${aapt.ignore.assets}">
       <res path="${out.res.absolute.dir}" />
       <res path="${resource.absolute.dir}" />
       <!-- <nocompress /> forces no compression on any files in assets or res/raw -->
       <!-- <nocompress extension="xml" /> forces no compression on specific file extensions in assets and res/raw -->
     </aapt>
 
     <touch file="${STAMP}" />
   </target>
 </project>