import IB's TWS API 9.69-1
update ChangeLog-IB (beta notes 9.69)
import IB's TWS API 9.69-2
Merge branch 'ib_orig' into ib_orig_plus

* ib_orig:
  import IB's TWS API 9.69-2
  update ChangeLog-IB (beta notes 9.69)
  import IB's TWS API 9.69-1