Update to new build style

Author: loopj

build.xml

@@ -1,6 +1,6 @@
 <project default="package">
     <property file="local.properties"/>
-    <property file="default.properties"/>
+    <property file="project.properties"/>
 
     <!-- Package properties -->
     <property name="package.name" value="android-async-http" />

default.properties

@@ -0,0 +1,12 @@
+# 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.
+
+android.library=true
+# Project target.
+target=android-3