Commander: Only consider latest active data link heartbeat for timeout.
Compiler warning fixes
Move a seldomly used module to test config
telemetry_statur: use 4 separate topics
Reduce excessive stack sizes for FW estimation / control apps
sdlog2: TEL message format fixed
Bring everything up to double
Fixes #1130
Merge pull request #1130 from PX4/pr-1130

Fix IO Firmware build warnings
Merge pull request #1135 from PX4/stack_fw_save

Reduce excessive stack sizes for FW estimation / control apps
Merge pull request #1123 from DonLakeFlyer/Warnings

Compiler warning fixes
Merge pull request #1129 from PX4/roboclaw_test

Move a seldomly used module to test config
Merge pull request #1133 from PX4/datalink_fix

Telemetry status: use separate topic for each link
Fix unused variable warnings
Merge pull request #1140 from DonLakeFlyer/UnusedVariableWarnings

Fix unused variable warnings
Merge remote-tracking branch 'upstream/master'