Add new templates directory for "reference only" builds.
The only difference is that this changes the masthead.cs file to show a different header.

Change-Id: Id58eb7e8c42a8ab0886f2f5da794fcd108f299ff
diff --git a/tools/droiddoc/templates-sdk-refonly/data.hdf b/tools/droiddoc/templates-sdk-refonly/data.hdf
new file mode 100644
index 0000000..9411b78
--- /dev/null
+++ b/tools/droiddoc/templates-sdk-refonly/data.hdf
@@ -0,0 +1,4 @@
+template {
+    which = normal
+}
+