arm gcc: upgrade arm toolchain to 4.7-2013q1
CoordinateConversions: remove two unused functions

These are the old methods used for converting from LLA to NED
but we no longer use them.
CoordinateConversions: remove two more unused functions
Merge pull request #654 from peabody124/coordinate_conversions_remove_unused

CoordinateConversions: remove two unused functions
Merge pull request #652 from solidgoldbomb/upgrade-arm-toolchain

arm gcc: upgrade arm toolchain to 4.7-2013q1
Change SystemSettings UAVO to represent that the data is no longer GUI
configuration data, but is instead encoding the airframe setup.
Add new trim UAVOs
Added new TrimAngles UAVO to all targets.
Added autopilot level trim to Stabilization module.
Added UI support for setting actuator trim and level bias values on fixed-
wing platforms.
Changes requested in review.
Added new control mode, Enhanced Attitude. Enhanced Attitude uses the trim
angle as the attitude setpoint.
Fixed conflicts from rebase.
Removed Yaw from TrimAngles.
Renamed EnhancedAttitude --> AttitudePlus.
Rename stabilizationDesired --> stabDesired.
Fixed accidental changes during merge.