Fix SQLite limit issue.
SQLLite limit is not only used to limit the returned number of data.
It can be used to do an offset query.
For example, "SELECT * FROM table LIMIT 100, 10", will return the
data of index in the range of [100, 100 + 10).
This change set enable this kind of useage.
This is also more efficient than use "cursor.moveToPosition()".
In my experiment, I query 1000 items in batch mode, i.e.,
get 20 items out of 1000 each time.
Time of using LIMIT clause: 626ms
Time of useing "cursor.moveToPosition()": 2062ms
1 file changed