Fixed #8544: correctly cast `Comment.object_pk` to string when doing lookups. This really only papers over a bigger problem related to casting the RHS of GFKs, but that larger change can wait for a more systematic fix.
Fixed #8544: correctly cast `Comment.object_pk` to string when doing lookups. This really only papers over a bigger problem related to casting the RHS of GFKs, but that larger change can wait for a more systematic fix.

git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@8641 bcc190cf-cafb-0310-a4f2-bffc1f526a37

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