Please describe the problem:
In certain cases, QIF transactions that have transfers between two accounts will not import properly. 

Steps to reproduce:
1. Import the attached QIF file.

Actual results:
The second transaction, a withdrawal from checking, is instead
imported as a second withdrawal from savings. 

Expected results:
The second transaction is imported as a withdrawal from checking.

Does this happen every time?
Yes.

Other information:
If the order of the last two transactions in the file are reversed, the
import works correctly. This bug appears similar to bug #114724, but it is actually different because it is not specific to investment accounts.

This bug is caused by a flaw in the QIF importer's matching algorithm. The current criteria for matching two qif-splits together, one-to-one, is that they use the same date, the same amount, and that the second split is a transfer to/from the first split's account. However, there is no check that the first split is a transfer from/to the second's account.

Example: Two splits have the same date and amount. The first split, in account X,  is a transfer from account Y. The second split, in account Z, is a transfer to account X. Under the existing matching criteria, these two splits can be matched up, causing an incorrect import.