pgsql: Add: > o In rules, allow VALUES() to contain a mixture of 'old'

Log Message:
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Add:

> o In rules, allow VALUES() to contain a mixture of 'old' and 'new'
> references

Modified Files:
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pgsql/doc:
TODO (r1.1931 -> r1.1932)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1931&r2=1.1932)
pgsql/doc/src/FAQ:
TODO.html (r1.434 -> r1.435)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.434&r2=1.435)