7045184: GTK L&F doesn't have hotkeys in jdk7 b141, while b139 has

Reviewed-by: yhuang, ogino
diff --git a/jdk/src/share/classes/com/sun/java/swing/plaf/gtk/resources/gtk.properties b/jdk/src/share/classes/com/sun/java/swing/plaf/gtk/resources/gtk.properties
index 45f4a4d..3696c0e 100644
--- a/jdk/src/share/classes/com/sun/java/swing/plaf/gtk/resources/gtk.properties
+++ b/jdk/src/share/classes/com/sun/java/swing/plaf/gtk/resources/gtk.properties
@@ -56,9 +56,9 @@
 FileChooser.renameFileButtonText=Rename File
 FileChooser.renameFileButtonMnemonic=82
 FileChooser.cancelButtonText=Cancel
-#FileChooser.cancelButtonMnemonic=67
+FileChooser.cancelButtonMnemonic=67
 FileChooser.saveButtonText=OK
-#FileChooser.saveButtonMnemonic=79
+FileChooser.saveButtonMnemonic=79
 FileChooser.openButtonText=OK
 FileChooser.openButtonMnemonic=79
 FileChooser.saveDialogTitleText=Save
@@ -79,5 +79,5 @@
 FileChooser.renameFileErrorTitle=Error 
 FileChooser.renameFileErrorText=Error renaming file "{0}" to "{1}"
 
-#OptionPane.okButtonMnemonic=79
-#OptionPane.cancelButtonMnemonic=67
+OptionPane.okButtonMnemonic=79
+OptionPane.cancelButtonMnemonic=67