Fixed a couple of typos & hardened against future similar errors.
Fixed a couple of typos & hardened against future similar errors.

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