separate all telemetry code and add option to use softserial for telemetry.
to use, set softserial_baudrate=9600, softserial_inverted=1 and  telemetry_softserial=1
then enable feature TELEMETRY.
by disq


git-svn-id: https://afrodevices.googlecode.com/svn/trunk/baseflight@448 7c89a4a9-59b9-e629-4cfe-3a2d53b20e61
cleaning up some misc fuckups from msp handler

git-svn-id: https://afrodevices.googlecode.com/svn/trunk/baseflight@449 7c89a4a9-59b9-e629-4cfe-3a2d53b20e61