Added configuration option to SummaryString

the only option in the configuration object is to print row types
Added row types to SetPlanNode
Update type of inner results of setPlanNode

The result between the setplannode and it's two inner projects
are now updated to hove the correct types
Removed usage of DEFAULT, pass config down calls
PlanToString.Configuration->PlanNode.summaryConfiguration
merge ScottDugas: Added showRowTypes option to RulesTest & fixed bug in TypesResolver

Merge pull request #1526 from ScottDugas/sql-layer/test-rowtype-nullness
https://github.com/FoundationDB/sql-layer/pull/1526