- repair the "lockmode" functionality of load_on_ident().  slightly problematic here is that "lockmode" is also public in Session.refresh().
- repair the "lockmode" functionality of load_on_ident().  slightly problematic
here is that "lockmode" is also public in Session.refresh().

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