Log Message:
-----------
Remove unused 'printCost' field from ExplainState, and simplify the code
accordingly (this field was always initialized to true). Patch from
Alvaro Herrera.
Modified Files:
--------------
pgsql/src/backend/commands:
explain.c (r1.136 -> r1.137)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/explain.c.diff?r1=1.136&r2=1.137)