This patch stops popup frames getting buffer tabs, in particular the 
balloon help frame. It should also by side effect fix the crash someone was 
seeing in gnus. This was caused by balloon help trying to appear. The real 
cause of the crash I have yet to fix (its because autodetect glyphs can 
cause strings to get instantiated but don't have their governing domain set 
to the same thing).
andy
2000-11-20  Andy Piper  <andy(a)xemacs.org>
	* gutter-items.el (update-tab-in-gutter): don't give popup frames
	buffer tabs.
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Dr Andy Piper
Principal Consultant, BEA Systems Ltd