fixes #6484, added missing META modifier key as a constant and handling on the client side.

svn changeset:17385/svn branch:6.5

src/com/vaadin/event/ShortcutAction.java

@@ -367,5 +367,7 @@ public class ShortcutAction extends Action {
         public static final int CTRL = 17;
 
         public static final int ALT = 18;
+
+        public static final int META = 91;
     }
 }

src/com/vaadin/terminal/gwt/client/ui/ShortcutActionHandler.java

@@ -224,6 +224,7 @@ class ShortcutKeyCombination {
     public static final int SHIFT = 16;
     public static final int CTRL = 17;
     public static final int ALT = 18;
+    public static final int META = 91;
 
     char keyCode = 0;
     private int modifiersMask;
@@ -255,6 +256,10 @@ class ShortcutKeyCombination {
                     modifiersMask = modifiersMask
                             | KeyboardListener.MODIFIER_SHIFT;
                     break;
+                case META:
+                    modifiersMask = modifiersMask
+                            | KeyboardListener.MODIFIER_META;
+                    break;
                 default:
                     break;
                 }