[stm32] removed -mapcs-32 assembler option, as it doesn't exist anymore since gcc 4
[build system] more makefile cleanup for lpc stuff
- removed usb_lib target, not used anywhere
- fix lpc bootloader makefile
[boards] readability and overwritable defaults
[v4.2-import] Recent additions to V4.2
remove some unnecessary checks from setup_actuators
[sim] really add launchsitl as symlink to pprzsim-lauch for backwards compat
Merge pull request #360 from paparazzi/recent_addition_to_v4.2

minor updates from stable v4.2
[xml] test updates
[stm32] ppm: update some comments
[baro_ms5611] yet another baro hack until we have a proper baro interface
Also see #106
Totally untested!
To use the baro_ms511 for altitude estimation add to your aiframe file:
firmware section:
<define name="USE_BAROMETER"/>
<define name="USE_BARO_MS5611"/>
<define name="INS_BARO_SENS" value="1.0"/>
modules:
<load name="baro_ms5611_i2c.xml/>
<load name="baro_board.xml">
  <define name="BARO_ABS_EVENT" value="BaroMs5611Update"/>
</load>
[conf] update Twinstar_energyadaptive example
[build system] honor TMPDIR environment variable
closes #229
[gcs] add "waiting for telemetry..." to alerts console on startup
While this is only a very minimal message, close #10 for now...
[modules] nav_catapult: set delay in seconds
untested, but should close #188
[conf] remove ins_neutrals settings from Classix_XSens
Merge branch 'master' of github.com:paparazzi/paparazzi into tudelft4.9