warning in gui on windows

[Riccardo Mottola]

Hi,

I get the following on windows:
 Compiling file NSMenuItem.m ...
 Compiling file NSMenuItemCell.m ...
NSMenuItem.m: In function `-[NSMenuItem setAttributedTitle:]':
NSMenuItem.m:514: warning: `NSAttributedString' may not respond to `-string'
NSMenuItem.m:514: warning: (Messages without a matching method signature
NSMenuItem.m:514: warning: will be assumed to return `id' and accept
NSMenuItem.m:514: warning: `...' as arguments.)
 Compiling file NSNib.m ...

 Compiling file NSTextFieldCell.m ...
NSTextField.m: In function `-[NSTextField textDidEndEditing:]':
NSTextField.m:597: warning: `NSDictionary' may not respond to 
`-objectForKey:'
NSTextField.m:597: warning: (Messages without a matching method signature
NSTextField.m:597: warning: will be assumed to return `id' and accept
NSTextField.m:597: warning: `...' as arguments.)
 Compiling file NSTextView.m ...
 Compiling file NSToolbarItem.m ...

I did not notice them on linux, but I'll check again later today... I 
wonder if they are harmful and/or shall be fixed and why they appear on 
mingw...

Riccardo