Info-build-node-completions has an extra `*' node

[Drew Adams]

emacs -Q
Go to an Info manual, or even the top level (dir).
Use Info-goto-node, choosing the completion candidate `*'.
The current node stays current, but now the node name in the mode line etc.
is `*'.
 
IMO, `*' should not be one of the available completion candidates.
 
`*' gets added by `Info-build-node-completions'. It seems to have only
an internal purpose, and it should be removed from the final set of
completions.

 
In GNU Emacs 22.1.90.1 (i386-mingw-nt5.1.2600)
 of 2008-01-30 on PRETEST
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --cflags -Ic:/gnuwin32/include'