[rfa] Minor cpp.texi tweeks

[Zack Weinberg]

On Tue, Jul 25, 2000 at 03:34:55PM +1000, Andrew Cagney wrote:
> Hello,
> 
> The attatched appends a ``.'' to xref{} in three places where it was
> missing.  makeinfo 3.12f didn't like it.

I don't know if makeinfo 3.12f is one of the officially supported
versions, but the documentation for texinfo 4.0 says the trailing
period is required.  So go ahead and check in the patch.

zw