Thread: pgsql: Don't remove the 'alias' field from flattened rangetable entries;

Log Message:
-----------
Don't remove the 'alias' field from flattened rangetable entries;
there are some corner cases where this is needed by ruleutils.c for
proper display of variables during EXPLAIN.

Modified Files:
--------------
    pgsql/src/backend/optimizer/plan:
        setrefs.c (r1.133 -> r1.134)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/plan/setrefs.c.diff?r1=1.133&r2=1.134)