Tweaked the dummy database backend initialisation.
Tweaked the dummy database backend initialisation.

In order to report more comphrehensible tracebacks, remove the super()
constructor call, since passing args to object.__init__ ends badly. So some
subclassing possibilities are now removed, but it's the "dummy" backend, so
we can make some compromises.

git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@10042 bcc190cf-cafb-0310-a4f2-bffc1f526a37

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