APPROVE 21.5 RECOMMEND 21.4
Vin: this should apply (possibly with offset) to 21.4.  It's
appropriate.
Admirably thorough, as usual.
Please commit at your convenience.
lisp/ChangeLog addition:
2005-02-16  Aidan Kehoe  <kehoea(a)parhasard.net>
	* buffer.el (pop-to-buffer):
	* window-xemacs.el (display-buffer):
	Document use of `same-window-buffer-names,' `same-window-regexps'
	by pop-to-buffer and display-buffer. 
	
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