Log Message:-----------Update obsolete comment describing ExecDelete(), per Simon Riggs.
Modified Files:-------------- pgsql/src/backend/executor: execMain.c (r1.257 -> r1.258) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/execMain.c.diff?r1=1.257&r2=1.258)
