Update the Jdbc2Statement to remove the Driver rewriting of any number
of functions for the PostgreSQL server.
Re-enable the StatementTest which tests the Jdbc2Statement processing,
including the change to the function parsing. Find three bugs in the
sql-layer processing of the functions, so disable those specific tests.
Remove redundant code.
merge tjoneslo: Statement test

Merge pull request #3 from tjoneslo/pgjdbc/statement-test
https://github.com/FoundationDB/sql-layer-jdbc/pull/3