Regroup GEQO configs.

src/backend/utils/misc/postgresql.conf.sample

@@ -79,14 +79,14 @@
 #cpu_tuple_cost = 0.01
 #cpu_index_tuple_cost = 0.001
 #cpu_operator_cost = 0.0025
-#geqo_selection_bias = 2.0 # range 1.5-2.0
 
 
 #
 #	GEQO Optimizer Parameters
 #
+#geqo_selection_bias = 2.0 # range 1.5-2.0
 #geqo_threshold = 11
-#geqo_pool_size = 0  #default based on #tables in query, range 128-1024
+#geqo_pool_size = 0        # default based on #tables in query, range 128-1024
 #geqo_effort = 1
 #geqo_generations = 0
 #geqo_random_seed = -1     # auto-compute seed