This commit begins to implement blueprint consolidate-testing-infrastructure by
adding a 'testing' subpackage and moving some modules into it.
Change-Id: I04bf860bc386bd2016e7dbc5a6f6ef7379a855bb
* quieter build (fewer warnings)
* move api reference out of root directory
* auto glob api reference into a TOC
* remove old dev entries for new-fangled auto-generated docs