Add libsfp submodule
Refactor comms(Out)Engine, integrate libsfp
Use latest libsfp
Use latest version of libsfp
Use forward declaration to speed build times
Add libsfp to the build script
libsfp integration complete!
Remove old code
Merge branch 'dev_debugmsg' of github.com:Barobo/libbarobo into async_framing2

Conflicts:
	mobot.c

Also, fix up some error checks regarding file descriptors in unix.
Use latest libsfp
Update to latest libsfp
Add a bunch of error checks
Use latest libsfp
More error checking
Update to latest libsfp and start refactoring
use latest libsfp
Start refactoring connection-related stuff out
Use latest libsfp
Use latest libsfp
Add dongle code