Test Failures against real servers

Running against a 6.0 or 6.5 server, there are many failures (at least, for me).  So - lets fix them.  There are segfaults (against a 6.5 server in test_mutatein, which Ellis Breen is looking at now, and in test_importworks in 6.0).  I can make the 6.0 one go away by just changing self.do_analytics_query to self.perform_query - but of course that is no 'fix'.  Nice to get it moving along.  Similarly, the test_diagnostics function just hangs for me.  So - I just changed the timeout there to be finite and now it fails.  But that gets us moving.  Once I do that, I see 37 failures.  So - I'll just whittle away at them.