Changes to ticket 7623999369

By kinaba on 2012-07-14 18:01:55. See also: artifact content, and ticket history

1. Change comment to "The BFS starts from goal. Can I rewrite it to the normal order?"
2. Change severity to "Critical"
3. Change status to "Open"
4. Change title to "Solver_1's backward search is confusing."
5. Change type to "Code_Defect"