[1.0.X] Fixed #11107 -- Corrected the generation of sequence reset SQL for m2m...

[1.0.X] Fixed #11107 -- Corrected the generation of sequence reset SQL for m2m fields with an intermediate model. Thanks to J Clifford Dyer for the report and fix.

Merge of r11215 from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@11216 bcc190cf-cafb-0310-a4f2-bffc1f526a37