Support disableAdditionalMoreKeys and disableKeyLabelHint

Change-Id: Idfa586417acd4a223380d52f044e3a86eb780b21
diff --git a/java/res/xml-sw600dp/rows_bulgarian.xml b/java/res/xml-sw600dp/rows_bulgarian.xml
index 054b450..cabd1e6 100644
--- a/java/res/xml-sw600dp/rows_bulgarian.xml
+++ b/java/res/xml-sw600dp/rows_bulgarian.xml
@@ -27,7 +27,8 @@
         latin:keyWidth="7.692%p"
     >
         <include
-            latin:keyboardLayout="@xml/rowkeys_bulgarian1" />
+            latin:keyboardLayout="@xml/rowkeys_bulgarian1"
+            latin:keyLabelFlags="disableAdditionalMoreKeys|disableKeyHintLabel" />
         <Key
             latin:keyStyle="deleteKeyStyle"
             latin:keyWidth="fillBoth" />