genericized the relationship between bind_processor() and _bind_processor() a little more
genericized the relationship between bind_processor() and _bind_processor() a little more

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