fix to use ins_alt_dot with baro wen USE_BAROMETER is defined
[modules] baro_board: only call event handler if there is new data
[modules] fix warning in baro_board
[modules] baro_amsys: fix for DT to match BARO_READ_PERIODIC_PERIOD
[modules] BARO_x_DT from generated BARO_x_PERIODIC_PERIOD
[modules] baro_amsys: comment to match the other baro sensors
[math] remove ALGEBRA_x_USE_SLOW_FUNCTIONS
[math] untabify
[ahrs] use FLOAT_QUAT_INTEGRATE in mlkf
[fixedwing] add zamboni_survey
[fixedwing] refactor zamboni_survey
[fixedwing][modules] convert zamboni_pattern to a module
[ardrone] Barometer bmp180 implementation added.

Also fixed a bug in the navdata driver, where cropping was done twice.
Baro still needs to be tested, because sometimes unexpected things happen.
[ardrone] Fixed Baro
[ardrone] Rebuilt modules for ardrone firmware 2.4.3 and removed unneeded ones

removed modules are already included in the firmware since 2.4.3 that we know of
[conf] remove zamboni_pattern from navigation_extra
[modules] add missing zamboni_survey.xml
Trace Serialport
omap uart problem fix
[ardrone] Read zero baro altitude at sealevel