For hard to debug problems, actually having access to the bytes of a
message can be the only definitive way to diagnose.

This CR adds a debug configuration section, and allows for setting a
directory to log all Broadcast messages, as well as a directory to log
all Deliver messages.

Although there is no support for dynamically changing debugging
parameters at this time, the code deliberately retrieves the debug
parameters from the debug struct at every instance to allow for dynamic
control of the debugging.

Change-Id: Ib046f263dc95b374b5883af66397a9d29049ffef
Signed-off-by: Jason Yellick <jyellick@us.ibm.com>