More Drag Operation

[Yen-Ju Chen]

Hi,

 There are more NSDragOperation in Cocoa than GNUstep.
 In Cocoa, there are
   NSDragOperationCopy,
   NSDragOperationLink,
   NSDragOperationGeneric,
   NSDragOperationPrivate,
   NSDragOperationMove,
   NSDragOperationDelete,
   NSDragOperationEvery,
   NSDragOperationAll,
   NSDragOperationNone.
 And in GNUstep, there are
   NSDragOperationNone = 0,
   NSDragOperationCopy = 1,
   NSDragOperationLink = 2,
   NSDragOperationGeneric = 4,
   NSDragOperationPrivate = 8,
   NSDragOperationAll = 15.

 So the difference are:
   NSDragOperationMove,
   NSDragOperationDelete,
   NSDragOperationEvery.
 And Cocoa deprecate NSDragOperationAll and use NSDragOperationEvery 
instead.

 Maybe GNUstep can add these three more declaration
 using #if...

 Yen-Ju


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