* CORDA-847 - Pass serialization context down serialization call stack
Needed for later work on AMQP RPC where we need to set per-thread
elements on a context. Could use some magic thread local but I'd rather
it was explicit on the stack and thus easier to reason about.
Additionally, now we're passing this around we can make better use of it
in the future
* Test Fix
* Test fixes
* REVIEW COMMENTS / CODE FORMAT
* Fix build issues
* CORDA-1238 - Initial blob inspector tool commit
Note this is WIP and not ready for prime time but it's time it moved off
of a personal branch and into the main code base, especially if I'm
passing the serialization code onto someone else's shoulders
* CORDA-1238 - Move blob inspector into experimental
It was developed locally in tools (as it's a tool), but it's no
where near production ready, so lets just ship it in experimental
for now
* CORDA-1238 - Tidyup and bug fixes
