TST: test against all of boost data files. 

In special, enable test against all of the data files from boost. Things that seem truely awful are marked as known failures. Some stuff could probably use a look that isn't marked though, some of the stats functions from I guess cdflib seem maybe not as good as they could be. 

Unfortunately I suspect we will find some of these fail on other platforms with these limits, just based on the commits to test_data.py over the years. 

I also move our locally generated test data to its own directory.