Hotfix: Off-by-one fix in overflow check
Merge branch 'master' of github.com:PX4/Firmware
arming: added PWM_SERVO_SET_ARM_OK and PWM_SERVO_CLEAR_ARM_OK

these new ioctls allow for the flight code to tell the IO board that
arming can proceed
Hotfix: Changed alarms back to what they originally were designed for: Traps to later see if condition was once violated. Currente status can be read through the status flags
Hotfix: install the firmware .bin files as well as the .px4 bundles until we have a chance to fix the px4io uploader.
Added CCPM mixer
changed control index for speed controller output from 5 to 4
Teach the PX4 build system how to handle pre-built libraries.
Use the new prebuilt-library support to wrap the ARM CMSIS DSP library, and update to the version shipped with CMSIS 3.0 r3p2
enable usb console
change default rc channel mapping
Fix .gitignore to avoid ignoring prebuilt libraries.

Also, generally clean-up the .gitignores and farm off separate versions for the NuttX/Apps directories to keep things tidy.
Hotfix: Building fixedwing backside params correctly
Merge branch 'master' of github.com:PX4/Firmware
Hotfix: Changed alarms back to what they originally were designed for: Traps to later see if condition was once violated. Currente status can be read through the status flags
Better preflight check, catches wrong RC configs. Needs rework of mavlink text message API to VARARGs
VA args now supported by MAVLink text messages
Fixed va args in MAVLink, tested with RC config, correct output
Fixed missing count
Removed unnecessary cplusplus check