Log Message:
-----------
Add:
< 
> * Use a phantom command counter for nested subtransactions to reduce
>   tuple overhead
Modified Files:
--------------
    pgsql-server/doc:
        TODO (r1.1290 -> r1.1291)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/doc/TODO.diff?r1=1.1290&r2=1.1291)