android: Update build system for recent SDK versions and target ice cream sandwich.

As a result, the java parts can now be build using ant (in the android dir).
Just issue "ant debug" after "make libs". Building the java parts from eclipse
also still works.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31543 a1c6a512-1295-4272-9138-f99709370657
diff --git a/android/project.properties b/android/project.properties
new file mode 100644
index 0000000..8da376a
--- /dev/null
+++ b/android/project.properties
@@ -0,0 +1,11 @@
+# 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.
+
+# Project target.
+target=android-15