Merge branch 'PGPROEE10-in_memory' into PGPROEE10_DEV

Author: Sokolov Yura

contrib/in_memory/fdw.c

@@ -619,7 +619,7 @@ imGetForeignPaths(PlannerInfo *root, RelOptInfo *baserel, Oid foreigntableid)
 	ListCell *lc;
 
 	startup_cost = baserel->baserestrictcost.startup +
-		cpu_index_tuple_cost * log2(pstate->pages * (BLCKSZ / IN_MEMORY_BLCKSZ));
+		cpu_index_tuple_cost * log(pstate->pages * (BLCKSZ / IN_MEMORY_BLCKSZ));
 	cpu_per_tuple = cpu_tuple_cost + baserel->baserestrictcost.per_tuple;
 	total_cost = startup_cost + cpu_per_tuple * ntuples;