Added additional code logger

this outputs the code in the way that I needed it for mass inserts
Added method to remove fields
Ignore all currently unused methods/fields
merge ScottDugas: Ignore unhandled parse tree elements

Merge pull request #1406 from ScottDugas/sql-layer/ignore-unhandled-parse-tree-elements
https://github.com/FoundationDB/sql-layer/pull/1406