Scala 2.9.1 and Salat 1.9.2

For your consideration:

I've managed to get tests passing using Salat 1.9.2 (I plan on making a 2.10 branch as well).

I've also added some methods for working with Avro datafiles, and some test to go along with them. 

Apologies for the messy history; still getting the hang of things!

No sweat if you're over this project, thanks for making this OSS!
-Julian