sophia: introduce new dml scheme

test subsystem is temporarily unavailable.
sophia: add new ctl parser
sophia: always return an object on sp_get(ctl)
separate triggers by name
sophia: introduce new test subsystem / test generator.
move and refactor every test.
sophia: separate transaction commit phases in test suite.
Merge branch 'dev' into ctl-refactoring
sophia: use global LSN instead of LSVN in single-stmt transaction
sophia: test-suite. add truncate scene
sophia: introduce new test system, multithreaded tests
sophia: remove old comments
Merge branch 'dev' into ctl-refactoring