Fixed #9862 -- For better SQL portability, don't specify "NULL" on nullable columns when creating tables. Patch from Ian Kelly.
Fixed #9862 -- For better SQL portability, don't specify "NULL" on nullable
columns when creating tables. Patch from Ian Kelly.

Columns are NULL by default, so we only need to use "NOT NULL" when we want
non-default behaviour.

git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@9703 bcc190cf-cafb-0310-a4f2-bffc1f526a37

aparo/django-nonrel,aparo/django-nonrel,FlaPer87/django-nonrel,FlaPer87/django-nonrel,FlaPer87/django-nonrel,aparo/django-nonrel