Tests for unicode columns with non-unicode defaults.  See #2079.
Tests for unicode columns with non-unicode defaults.  See #2079.

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