Adopting to kernel API and system tables. No system transaction in use. Relying on new name of MaterializedTable. Fixed bugs in handler names.  Added transactions to calls to schema modification functions during bootstrap. Adapted getting index info. Adopted calls to native functions through systables in many cases. Disabled methods to use system transactions. Fixed API to kernel. Added API through systables.
Tests: insert into does not require system transaction. Renaming of materialized tables and their columns.