Added a test that shows the problem in #4470. This fails only for the mysql_old backend. Refs #4470.
Added a test that shows the problem in #4470. This fails only for the mysql_old
backend. Refs #4470.


git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@5617 bcc190cf-cafb-0310-a4f2-bffc1f526a37

bfirsh/django-old,sam-tsai/django-old,disqus/django-old,sam-tsai/django-old,skevy/django,mitsuhiko/django,sam-tsai/django-old,alex/django-old,dcramer/django-compositepks,Smarsh/django,skevy/django,jamespacileo/django-france,hugs/django,t11e/django,mitsuhiko/django,dcramer/django-compositepks,dcramer/django-compositepks,Instagram/django,skevy/django,django-nonrel/django-nonrel,Smarsh/django,bfirsh/django-old,alex/django-old,jamespacileo/django-france,hugs/django,alex/django-old,jamespacileo/django-france,Instagram/django,Smarsh/django,t11e/django,disqus/django-old,django-nonrel/django-nonrel,django-nonrel/django-nonrel,mitsuhiko/django,Smarsh/django,sam-tsai/django-old,Instagram/django,bfirsh/django-old,t11e/django,disqus/django-old,hugs/django