Right now roundup.backend.back_sqlite only tries to
import sqlite.  Unfortunately pysqlite2 does not
install under that name, but as pysqlite.  On top of
that, in order to get back to what was originally
expected, you need to import pysqlite2.dbapi2 to get
this to work.

The attached patch is against 1.1.2 and tries to import
sqlite, and if that fails tries to import pysqlite2
properly as sqlite.

This should fix bug #1487098.