Fixed #2460 -- JSON serializer now correctly handles datetime objects.  Thanks, siniy and jyrki.pulliainen@gmail.com.
Fixed #2460 -- JSON serializer now correctly handles datetime objects.  Thanks, siniy and jyrki.pulliainen@gmail.com.

git-svn-id: 554f83ef17aa7291f84efa897c1acfc5d0035373@3501 bcc190cf-cafb-0310-a4f2-bffc1f526a37

svn2github/django,svn2github/django,svn2github/django