Make the SDK packaging put the samples in the root folder.

Change-Id: Icb88f88d503de9690ba210c0bfabdc0598021860
diff --git a/samples/source.properties b/samples/source.properties
new file mode 100644
index 0000000..73c0d76
--- /dev/null
+++ b/samples/source.properties
@@ -0,0 +1,5 @@
+Pkg.UserSrc=false
+Platform.Version=2.1
+Pkg.Revision=1
+AndroidVersion.ApiLevel=7
+