Make tests work on POSIX
Make tests work with Python 3
Factor out filename generation from testing methods
white space
Fix bug where oneway tests would think they had processed no data
Fix bug that passed shell operators to java instead of shell
Ignore python bytecode files
Make roundtrip test compatible with byte streams
Add some comments to test code
Make test script executable
Add script to time alternate versions of stream coders
Add summary stats to timer results
expand summary stats output