Fix for tags not being encoded/decoded in CPMenuItems.

[cappuccino#132 state:resolved].

AppKit/CPMenuItem.j

@@ -92,6 +92,7 @@
 
         _isEnabled = YES;
 
+        _tag = 0;
         _state = CPOffState;
 
         _keyEquivalent = aKeyEquivalent || @"";
@@ -749,6 +750,8 @@ var CPMenuItemTitleKey              = @"CPMenuItemTitleKey",
     CPMenuItemIsEnabledKey          = @"CPMenuItemIsEnabledKey",
     CPMenuItemIsHiddenKey           = @"CPMenuItemIsHiddenKey",
 
+    CPMenuItemTagKey                = @"CPMenuItemTagKey",
+
     CPMenuItemImageKey              = @"CPMenuItemImageKey",
     CPMenuItemAlternateImageKey     = @"CPMenuItemAlternateImageKey",
 
@@ -779,7 +782,8 @@ var CPMenuItemTitleKey              = @"CPMenuItemTitleKey",
         _isEnabled = [aCoder decodeObjectForKey:CPMenuItemIsEnabledKey];
         _isHidden = [aCoder decodeObjectForKey:CPMenuItemIsHiddenKey];
 
-//    int             _tag;
+        _tag = [aCoder containsObjectForKey:CPMenuItemTagKey] ? [aCoder objectForKey:CPMenuItemTagKey] : 0;
+
 //    int             _state;
 
         _image = [aCoder decodeObjectForKey:CPMenuItemImageKey];
@@ -823,6 +827,9 @@ var CPMenuItemTitleKey              = @"CPMenuItemTitleKey",
     [aCoder encodeObject:_isEnabled forKey:CPMenuItemIsEnabledKey];
     [aCoder encodeObject:_isHidden forKey:CPMenuItemIsHiddenKey];
 
+    if (_tag !== 0)
+        [aCoder encodeObject:_tag forKey:CPMenuItemTagKey];
+
     [aCoder encodeObject:_image forKey:CPMenuItemImageKey];
     [aCoder encodeObject:_alternateImage forKey:CPMenuItemAlternateImageKey];