mavlink: Warning fixes
Re-send the RC config warnings once the GCS is connected, fixed compile warnings
systemcmds: Warning fixes
drivers: Warning fixes
Navigator: Warning fixes
systemlib: Warning fixes
IO firmware: Warning / bug fixes
sensors: Warning fixes
INAV: Warning fixes
Merge branch 'master' into warning_fixes_v3
Fix line endings for patch
Merge pull request #1100 from PX4/warning_fixes_v3

Warning fixes v3
Merge branch 'warning_fixes_v3' into prearm_checks
Merge branch 'master' of github.com:PX4/Firmware into prearm_checks