General cleanup based on the pull request from muggenhor
Reformatting.
First steps to supporting GPS
More changes.
Merge remote-tracking branch 'upstream/master' into hott_v2
Add some GPS data to telemetry message.
gpio_led app added
Use work_queue instead of thread
Merge branch 'master' into gpio_led
GPS support - mostly working.
Merged new repository layout from 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
Merge branch 'master' into gpio_led
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