added a new test illustrating a particular inheritance bug.  will add ticket
added a new test illustrating a particular inheritance bug.  will add ticket

bdupharm/sqlalchemy,davidjb/sqlalchemy,brianv0/sqlalchemy,olemis/sqlalchemy,halfcrazy/sqlalchemy,EvaSDK/sqlalchemy,alex/sqlalchemy,itkovian/sqlalchemy,monetate/sqlalchemy,davidfraser/sqlalchemy,hsum/sqlalchemy,davidfraser/sqlalchemy,wujuguang/sqlalchemy,robin900/sqlalchemy,hsum/sqlalchemy,j5int/sqlalchemy,epa/sqlalchemy,j5int/sqlalchemy,itkovian/sqlalchemy,elelianghh/sqlalchemy,epa/sqlalchemy,pdufour/sqlalchemy,Cito/sqlalchemy,wujuguang/sqlalchemy,sandan/sqlalchemy,olemis/sqlalchemy,276361270/sqlalchemy,alex/sqlalchemy,dstufft/sqlalchemy,graingert/sqlalchemy,WinterNis/sqlalchemy,276361270/sqlalchemy,bdupharm/sqlalchemy,sandan/sqlalchemy,inspirehep/sqlalchemy,wfxiang08/sqlalchemy,robin900/sqlalchemy,halfcrazy/sqlalchemy,ThiefMaster/sqlalchemy,elelianghh/sqlalchemy,wfxiang08/sqlalchemy,zzzeek/sqlalchemy,ThiefMaster/sqlalchemy,brianv0/sqlalchemy,pdufour/sqlalchemy,WinterNis/sqlalchemy,dstufft/sqlalchemy,bootandy/sqlalchemy,Akrog/sqlalchemy,inspirehep/sqlalchemy,Akrog/sqlalchemy,bootandy/sqlalchemy,monetate/sqlalchemy,davidjb/sqlalchemy,Cito/sqlalchemy,sqlalchemy/sqlalchemy,graingert/sqlalchemy,Cito/sqlalchemy,EvaSDK/sqlalchemy,alex/sqlalchemy