[conf] no telemetry for fbw target
[telemetry] workaround for disabling send_mag_calib on dualApFbw
[modules] move sending of IMU_MAG_CURRENT_CALIBRATION to a module
[modules] fix filename in dox
[tool] fix create module script
[telemetry] change period of some messages

so they are not multiples of each others
the uart transmit buffer is slightly to small when using xbee_api and
svinfo is send with gps message
Added a flying-wing A/C Icon, and showed an exaple on microjet airframe
Corrected the typo which prevents the conventional A/C icon selection
[tools] stm32_mem.py: add option to only list devices

and make the dry run option an alias for list
[rotorcraft] include airframe.h in guidance_x_ref.h
[telemetry] reverse order of messages to send periodicaly

This way, messages that are send at low frequency have less chance to be
discarded if the uart buffer is filled by too many messages at the same
time. Higher frequency messages are most likely to find an empty slot.
[conf] fixedwing ahrs use gps course instead of mag for heading by default
[ahrs] warn if PERIODIC_FREQUENCY is lower than AHRS freqs
[config] better warning message and update example airframe
[stabilization] Float euler bounding and scaling fix
- added BoundAbs to properly bound the commands
- removed gain denominators in the control loop (i.e. now the gains should be more consistent with other stabilization systems)

First, it is easier to set your gains now, as the values set by GCS/airframe config are the ones actually used (no division).
Second, the gains are in the same range as for other stabilization systems (no need to change xml settings files for GCS to get proper range).
[plotter] open new plotter with parent settings
[plot] draw curves at low resolution when moving/selecting in log plotter

much faster when dealing with huge logs
[stabilization] fixed MAX_SUM_ERR
[boards] add driver for KroozSD BigRotorcraftEdition

- IMU with memsic MXR9500 accelerometer
- set mag correct freq to 75Hz for krooz_sd_x

closes #586
[build] ARM toolchain/Makefile cleanup

- possible to explicitly pass a PREFIX to use other toolchain
  default for PREFIX is arm-none-eabi or arm-linux-gnueabi
- print meaninfull error if arm-linux toolchain is not found
- printcommands prints only CC and GCC version
- remove obsolete find OpenOCD stuff