DRILL-257: Move SQL parsing to server side.
Switch to Avatica based JDBC driver.
Update QuerySubmitter to support SQL queries.
Update SqlAccesors to support getObject()
Remove ref, clean up SQL packages some.
Various performance fixes. Updating result set so first set of results must be returned before control is return to client to allow metadata to populate for aggressive tools like sqlline
Move timeout functionality to TestTools.
Update Expression materializer so that it will return a nullable int if a field is not found.
Update Project record batch to support simple wildcard queries.
Updates to move JSON record reader test to expecting VarCharVector.getObject to return a String rather than a byte[].
