Issue 4030 - Move JNI bindings into separate library project

build.xml

 <?xml version="1.0" encoding="UTF-8"?>
-<project name="Adblock Plus" default="help">
+<project name="Adblock Plus App" default="help">
 
     <!-- The local.properties file is created and updated by the 'android' tool.
          It contains the path to the SDK. It should *NOT* be checked into
          Version Control Systems. -->
     <property file="local.properties" />
 
     <!-- The ant.properties file can be created by you. It is only edited by the
          'android' tool to add properties to it.
          This is the place to change some Ant specific build properties.
          Here are some properties you may want to change/update:
@@ skipping 23 matching lines @@
          (or in .classpath for Eclipse projects).
 
          This file is an integral part of the build system for your
          application and should be checked into Version Control Systems. -->
     <loadproperties srcFile="project.properties" />
 
     <fail
         message="sdk.dir is missing. Make sure to generate specify it in local.properties or to inject it through an env var"
         unless="sdk.dir"
     />
-    <fail
-        message="ndk.dir is missing. Make sure to generate specify it in local.properties or to inject it through an env var"
-        unless="ndk.dir"
-    />
 
     <target name="-check-env">
         <checkenv />
         <exec executable="${sdk.dir}/tools/android" failonerror="true">
             <arg line="update lib-project --target android-14 --path submodules/actionbarsherlock/library"/>
         </exec>
         <exec executable="${sdk.dir}/tools/android" failonerror="true">
             <arg line="update lib-project --target android-7 --path submodules/android-switch-backport"/>
         </exec>
-    </target>
-
-    <target name="jni" description="Compiles and builds NDK libraries.">
-        <exec executable="${ndk.dir}/ndk-build" failonerror="true" />
-    </target>
-
-    <target name="-pre-build" depends="jni">
+        <exec executable="${sdk.dir}/tools/android" failonerror="true">
+            <arg line="update lib-project --target android-14 --path submodules/libadblockplus-android/libadblockplus-android"/>
+        </exec>
     </target>
 
     <target name="-pre-clean">
-        <delete dir="${native.libs.absolute.dir}/armeabi" verbose="${verbose}" />
         <delete dir="obj/" verbose="${verbose}" />
     </target>
 
     <!-- Import the actual build file.
 
          To customize existing targets, there are two options:
          - Customize only one target:
              - copy/paste the target into this file, *before* the
                <import> task.
              - customize it to your needs.
          - Customize the whole content of build.xml
              - copy/paste the content of the rules files (minus the top node)
                into this file, replacing the <import> task.
              - customize to your needs.
 
          ***********************
          ****** IMPORTANT ******
          ***********************
          In all cases you must update the value of version-tag below to read 'custom' instead of an integer,
          in order to avoid having your file be overridden by tools such as "android update project"
     -->
     <!-- version-tag: custom -->
     <import file="${sdk.dir}/tools/ant/build.xml" />
 
 </project>