Add --auto-add-overlay option to aapt.

This option allows resources only present in overlays to be
added automatically instead of being declared through <add-resource>

Change-Id: Iff782311056f6a045193e57d204f7d3413e11b26
diff --git a/tools/aapt/ResourceTable.h b/tools/aapt/ResourceTable.h
index cfa75a71..60d0901 100644
--- a/tools/aapt/ResourceTable.h
+++ b/tools/aapt/ResourceTable.h
@@ -425,7 +425,8 @@
                            const SourcePos& pos,
                            const ResTable_config* config = NULL,
                            bool doSetIndex = false,
-                           bool overlay = false);
+                           bool overlay = false,
+                           bool autoAddOverlay = false);
 
         const SourcePos& getFirstPublicSourcePos() const { return *mFirstPublicSourcePos; }