[1.2.X] Migrated m2o_recursive and m2o_recursive2 tests, merging them into a...

[1.2.X] Migrated m2o_recursive and m2o_recursive2 tests, merging them into a single package. Thanks to George Sakkis for the patches.

Backport of r14163 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14169 bcc190cf-cafb-0310-a4f2-bffc1f526a37