Deprecation of nib2gmodel when porting from Mac OS 10.2.x or later

[Gregory John Casamento]

All,

The nib2gmodel program is deprecated when porting from Mac OS 10.2 or later.   
The only role nib2gmodel plays at this point is to convert old typed stream 
nibs from OPENSTEP or from Mac OS 10.1 or earlier for use on GNUstep.

The AppKit/gui library's encoding/decoding code for nib handling is complete, 
and simply needs some testing to stabilize.   Nib2gmodel only  handles a small 
portion of the classes available, so using Gorm to convert your nibs or loading 
them directly is the best possible solution.

Later, GJC

--Gregory John Casamento