android: Commit the build.xml file

This file is generated by:
  android update project -p . -t $i

but it needs to have the name changed to the application name and thus
needs to be checked in.

https://bugzilla.gnome.org/show_bug.cgi?id=655792

Reviewed-by: Robert Bragg <robert@linux.intel.com>

examples/android/hello/.gitignore

@@ -2,7 +2,6 @@ bin
 libs
 obj
 
-build.xml
 default.properties
 local.properties
 proguard.cfg

examples/android/hello/build.xml

@@ -0,0 +1,84 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project name="TestCoglHello" 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 build.properties file can be created by you and is never touched
+         by the 'android' tool. This is the place to change some of the
+         default property values used by the Ant rules.
+         Here are some properties you may want to change/update:
+
+         source.dir
+             The name of the source directory. Default is 'src'.
+         out.dir
+             The name of the output directory. Default is 'bin'.
+
+         Properties related to the SDK location or the project target should
+         be updated using the 'android' tool with the 'update' action.
+
+         This file is an integral part of the build system for your
+         application and should be checked into Version Control Systems.
+
+         -->
+    <property file="build.properties" />
+
+    <!-- The default.properties file is created and updated by the 'android'
+         tool, as well as ADT.
+         This file is an integral part of the build system for your
+         application and should be checked into Version Control Systems. -->
+    <property file="default.properties" />
+
+    <!-- Custom Android task to deal with the project target, and import the
+         proper rules.
+         This requires ant 1.6.0 or above. -->
+    <path id="android.antlibs">
+        <pathelement path="${sdk.dir}/tools/lib/anttasks.jar" />
+        <pathelement path="${sdk.dir}/tools/lib/sdklib.jar" />
+        <pathelement path="${sdk.dir}/tools/lib/androidprefs.jar" />
+    </path>
+
+    <taskdef name="setup"
+        classname="com.android.ant.SetupTask"
+        classpathref="android.antlibs" />
+
+<!-- extension targets. Uncomment the ones where you want to do custom work
+     in between standard targets -->
+<!--
+    <target name="-pre-build">
+    </target>
+    <target name="-pre-compile">
+    </target>
+
+    [This is typically used for code obfuscation.
+     Compiled code location: ${out.classes.absolute.dir}
+     If this is not done in place, override ${out.dex.input.absolute.dir}]
+    <target name="-post-compile">
+    </target>
+-->
+
+
+    <!-- Execute the Android Setup task that will setup some properties
+         specific to the target, and import the build rules files.
+
+         The rules file is imported from
+            <SDK>/platforms/<target_platform>/ant/ant_rules_r#.xml
+
+         To customize existing targets, there are two options:
+         - Customize only one target:
+             - copy/paste the target into this file, *before* the
+               <setup> task.
+             - customize it to your needs.
+         - Customize the whole script.
+             - copy/paste the content of the rules files (minus the top node)
+               into this file, *after* the <setup> task
+             - disable the import of the rules by changing the setup task
+               below to <setup import="false" />.
+             - customize to your needs.
+    -->
+    <setup />
+
+</project>