Spektrum sat output on the RX.
quick fix
16 byte telemetry mode tested
Drop pointter use of bind_data (getXXXX funcs), saves about 100 bytes.
Fix framesize (only 7 channels), tested with baseflight.
Merge branch 'master' into hubdata2sp

Conflicts:
	RX.h
Allow using compilers from system location, if they are not part of Arduino install (e.g. on Fedora)
3.5.2 (spektrum sat output)
Merge branch 'master' into hubdata2sp

Conflicts:
	version.h