This allows a ICM20xxxx with an unkown product ID to be used
   with the mpu6000 driver.

   This change will issues a warning for any part with an unknown product ID.
   For mpu6000 parts (-T 6000 or not specified) it will then exit.
   For any ICM20xxxx part with an unknown product ID it will accept the ID
   and run with it.

   N.B. This fix expecte the value in the product ID register to be
   a per chip constant. (Not changing during operations)

so that we know which estimator was used in the log file

The ninja binary may have other names on Linux distributions. On Fedora
it's ninja-build.

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

Necessary so that build_git_version.h is generated before version.c is
compiled.

Error before:
../src/lib/version/version.c:152:31: error: 'PX4_GIT_TAG_STR' undeclared (first use in this function)
  return version_tag_to_number(PX4_GIT_TAG_STR);

Obsolete since 9ee478e1

otherwise the 'git describe' command can fail.

Since the git hashes were being generate by cmake it would only be
generated if the header file was not present. Simple test:

    $ make aerofc-v1_default
    $ touch a
    $ git add a
    $ git commit -m tmp
    $ make aerofc-v1_default

The file build_aerofc-v1_default/build_git_version.h should have the new
hashes and the correspondent .c/c.pp files should be rebuilt, but they
aren't.  The end result is that checking the version with "ver git" in
the nsh console will point to the wrong commit.

This moves the generation of the header to a separate tool and enforces
the command to be executed every time.

Commander: Indicate overload on the ground only if not transient. Adjust max CPU load to 80%. Indicate overload in air immediatley

leftover after rebase

This is cleanup after rebasing