The Django Evolution unit tests compare generated SQL statements with a
list of expected statements. When these don't match, there's very little
to go on for debugging.

This extends the debugging abilities by normalizing the generated and
expected SQL statements into a list of lines, showing both, and then
comparing the lists to help show where the differences are. This makes
it much easier to spot where things went wrong when there's a test
failure.

Unit tests pass.
Used this to debug test failures in the Django 1.7+ work.