[1.0.X] Fixed #9736 -- Added quoting to the SQL constraint names generated...

[1.0.X] Fixed #9736 -- Added quoting to the SQL constraint names generated during table creation. This is to accommodate primary keys with spaces.

Merge of [9543] from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@9545 bcc190cf-cafb-0310-a4f2-bffc1f526a37