remove unused BindingRewritingTraversal
rename Analysis to AnalyzedStatement
execute DDL statements using Planner/Executor
remove rowCount from TaskResult interface.

Tasks will now always write the rowCount into the rows and
there is only one place where the extraction of the rowCount
is done (in the transport where the SQLResponse is built).
Add OrderBy object to encapsulate symbols / flags during analysis.
fixed null insert into array as first bulk argument