Updated the SQLite backend to support the managed flag, introduced in trunk for Django v1.1.
Updated the SQLite backend to support the managed flag, introduced in trunk for Django v1.1.

git-svn-id: 48f3d5eb0141859d8d7d81547b6bd7b3dde885f8@165 8655a95f-0638-0410-abc2-2f1ed958ef3d

clones/django-evolution