interop testing

[Rafael Schloming <ra...@redhat.com>]

Please make sure to run the python interop test suite regularly. I ran 
it yesterday and was dismayed to find all the tests failing due to a 
recent change in the Java framing code that uses field table type codes 
in direct conflict with the specification, e.g. 'S' for short instead of 
String.

It is especially important to run the interop tests when making that 
sort of change because no amount of Java client -> Java broker testing 
will catch that kind of bug since they both use the same framing library 
and will therefore both be using the wrong type code.

I fixed this particular issue, however there are still many failures 
relative to the cpp broker.

--Rafael