Start MDP documentation, improve MSP documentation
Improve MSP documentation

Rename "Mesh Streaming Protocol" to "Mesh Stream Protocol"
Add CC-BY-4.0 license text
Add Tunnelling document (TCP over MSP)
Add copyright notices and CC-BY license to README.md and INSTALL.md
Add doc/README.md
Squelch rhizome sync messages if rhizome is disabled
Be more careful setting alarm times
Add support for STOPping a connection before shutdown
Add text of CC BY 4.0 license

Add LICENSE-DOCUMENTATION.md (commons deed) and CC-BY-4.0.md (legal
text)

All docs link to local commons deed instead of CC BY 4.0 web page
Fix "unused parameter" warnings for undefined HAVE_JNI_H
Call msp handler on a timer to prevent stalling
Improve test framework: return after fail()

So that functions can be used during teardown()
Don't reuse mdp ports that are already bound, release mdp bindings on msp close
Make sure only one bind request occurs at a time
Create new AF_UNIX based network simulator
Use simulator for existing msp tests
Add msp test over unreliable link