[1.0.X] Fixed #10256 -- Corrected the interaction of extra(select=) with...

[1.0.X] Fixed #10256 -- Corrected the interaction of extra(select=) with values() and values_list() where an explicit list of columns is requested.

Merge of r9837 from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@9884 bcc190cf-cafb-0310-a4f2-bffc1f526a37