Thread: pgsql: For non-projecting plan node types such as Limit,

Log Message:
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For non-projecting plan node types such as Limit, set_plan_references
has to recopy the input plan node's targetlist if it removes a
SubqueryScan node just below the non-projecting node.  For simplicity
I made it recopy always.  Per bug report from Allan Wang and Michael Fuhr.

Modified Files:
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    pgsql/src/backend/optimizer/plan:
        setrefs.c (r1.112 -> r1.113)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/plan/setrefs.c.diff?r1=1.112&r2=1.113)