Debug output, some cleanup, refactor of testParcel

everywhere:
- Stripped trailing whitespace on lines
- Commented out some debug output
- Changed more output to use verb instead of fprintf

debug_output.cpp:
- Changed format of print_bytes to not print weird ASCII characters

parcel.cpp:
- Removed old run_ssh_command and #define to switch between the two

udpipe_threads.cpp:
- More details printed when auth_peer fails

testParcel.py:
- Changed behavior so that localhost is no longer hardcoded
- Allowed logging to be done with an arg
- Changed how crypto, logging, and verbose work, just as a switch
- Round trip check is done after both legs now, so that files are sent,
and pulled back into a separate directory from original.  Then original
and new are compared.
- Test app is smarter about figuring out local position of app, what IP
addresses are, and what username is