RMK-475 (1) Add a needed api to database.py. (2) Add import of buildcfg so that [Sanitized]BuildConfiguration are registered as api types.
RMK-475
(1) Add a needed api to database.py.
(2) Add import of buildcfg so that [Sanitized]BuildConfiguration are registered as api types.

fedora-conary/rmake-2,fedora-conary/rmake-2,fedora-conary/rmake-2,fedora-conary/rmake-2