When doing C-x s `save-some-buffers' with copyright-update in
before-save-hook, when copyright-update asks whether to add a copyright
year it'd be good if it showed you the buffer it's asking about.

I tried the couple of lines below for a simple switch-to-buffer.
Perhaps a `perform-replace' or similar would be even better if it
highlighted the part of the buffer that's going to be changed too.


2010-01-15  Kevin Ryde  <user42@zip.com.au>

	* emacs-lisp/copyright.el (copyright-update-year, copyright-update):
	Temporary switch-to-buffer to ensure the buffer change being
	queried is visible.  Good for save-some-buffers when
	copyright-update is in before-save-hook.