Log Message:
-----------
Rename planner stats detail to avoid label confict.
Modified Files:
--------------
pgsql/doc/src/sgml:
planstats.sgml (r1.1 -> r1.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/planstats.sgml.diff?r1=1.1&r2=1.2)