Modified to compile with c++ compilers
Adjust include directories
Write SimulatedMedium
Remove old tests
Add comments
Relax too-slow-for-baud constraint
Add CTest stuff
Check arguments
Implemented SfpHost, use boost::signals2
Remove old code
Finish writing test (not that it passes)
Merge branch 'f/write-test' into f/cxx
Remove -pg from test code
Add config.h.in, fiddle with test
Factor out and expose context intialization method
Exception-safe transmitter locks (untested)
Depend on cxx-util for Callback/Signal
Let cxx-util dependency be implicit for now

Otherwise we have to use an "include guard" to prevent duplicate definition of
the cxx-util target, since baromesh also depends upon it. Not convinced that
that is a good idea.
Normalize CMakeLists
Copy in Mac staging tinkerings