The TECS controller belongs really into the ECL (estimation & control library) where we have collected a number of vehicle control systems. It is being replaced by a new implementation of the algorithm, contributed by Paul Riseborough.

* NuttX cmake

* px4_macros:Pass the stringified predicate as second arg to static assert

   CC_ASSERT mapes to the c++ static_assert or provides the same
   funtionality for c via the other macros. The c++ static assert
   takes 2 argumants the prdicate and a message. This fixes the
   lacking second argument.

* Updated nuttx and apps submodule to upstream nuttx 7.21+==master

   This is the latest uptake of upstream nuttx and apps.

* ROMFS generate with xxd instead of objcopy

* delete nuttx-patches

* NuttX update submodules to latest px4_nuttx-master

* fix nuttx apps and board dependency

* docker_run update to latest container 2017-08-29

* cmake ROMFS portable sed usage

* NuttX update submodules to latest px4_nuttx-master

This commit changes old trone driver into a generic
TeraRanger driver that supports both TeraRanger One
and TeraRanger Evo.

As a part of the change a new parameter was created
SENS_EN_TRANGER that allows to specify the following
modes of operation:

0 - sensors disabled
1 - autodetect sensors
2 - use TeraRanger One rangefinder
3 - use TeraRanger Evo rangefinder

Signed-off-by: Mateusz Sadowski <msadowski90@gmail.com>

This reverts commit d1da112334a875d83abbd04c50fd3bed3b069886.

This commit adds i2c support for TeraRanger Evo sensor
by Terabee

Signed-off-by: Mateusz Sadowski <msadowski90@gmail.com>

 - move controllib_test under controllib

 - closes #6686
 - closes #6294

Removes Iridium SBD support

Signed-off-by: Roman <bapstroman@gmail.com>

The provided versioning information is the same, except for some additions,
like OS version (which still need to be implemented on NuttX).

Mavlink module implement HIGH_LATENCY (Iridium)

roughly 10K bytes below the 1MiB limit

With GCC 4.9 the binary is to large for the flash memory.
This is why we disabled LPE on that platform.

This disables the following modules to save flash:
- mpu9250 driver because the MPU9250 is rarely used on Pixhawks
- Snapdragon RC PWM passthrough which is rarely used and definitely a
  special/custom configuration. Also, it will soon be obsolete with the
  upcoming PWM support on Snapdragon.