Log Message:
-----------
Improve comments about RelOptInfo.reltargetlist.
Modified Files:
--------------
pgsql/src/include/nodes:
relation.h (r1.160 -> r1.161)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/nodes/relation.h?r1=1.160&r2=1.161)