In order to use the RIOT bootloader (riotboot) a header needs to
be created and placed before the firmware. This tool generates
such a header with the expected information by the bootloader.

Co-authored-by: Kaspar Schleiser <kaspar@schleiser.de>

Signed-off-by: Dylan Laduranty <dylan.laduranty@mesotic.com>

Get FLASH_FILE and ELFFILE from command line instead of environment variable.

The documentation was claiming ELFFILE was given as a command line argument
already, but is was not.

This can happen when opening a terminal right after flashing a board that has just been plugged

Get BINFILE and ELFFILE from command line instead of environment variable.

Rename 'HEXFILE' to 'BINFILE' in the script as the binary file is used.
The documentation was already talking about 'BINFILE' but 'BINFILE'
was never exported by the build system and it was using 'HEXFILE' in the
implementation.

The previous doccheck would give a false negative when doxygen does
not even run (for example, because of misconfiguration).

Also, when doxygen fails to run, print the full output.

The archi was changed in IoT-LAB: samr30:at86rf215 => samr30:at86rf212b

Add a script to execute sanity checks on build system files.
It should prevent bad patterns to re-appear after being cleaned.

Currently adds a check for using the content of `FEATURES` instead of
`USEMODULE`.

Modules should not check the content of FEATURES_PROVIDED/_REQUIRED/OPTIONAL
Handling specific behaviors/dependencies should by checking the content of:
 * `USEMODULE`
 * maybe `FEATURES_USED` if it is not a module (== not a periph_)

https://stackoverflow.com/a/24276470

    In replacement strings used with the s command, assume that NO
    control-character escape sequences are supported (ex '\n')

Replace with an escaped newline character. Current form works in 'bash'.

https://stackoverflow.com/a/24276470

    Labels and branching commands (e.g., b) must be followed by an actual
    newline or continuation via a separate -e option.

Prepare for other refactoring.

nrf52840dk and microbit

Support for `nrf52dk` and `samr30-xpro` has been added on saclay site.

Define them in alphabetical order instead on putting the 'iotlab'
specific nodes at first. Prepare for adding new architectures.

This removes all non-application based driver/devices and replaces with riot_pal.
riot_pal (riot protocol abstraction layer) can be installed with pip install riot_pal.
The purpose is ti simplify and modularize the interfaces and tests.
All tests using the if_lib interface are updated too.

In [#10030][1] it was decided to rename all labels to reflect their
respective category. The labels "NEEDS SQUASHING" and "Waiting For Other
PR" are used in the `dist/tools/pr_check/pr_check.sh` script however, so
that script needs to be adapted.

[1]: https://github.com/RIOT-OS/RIOT/issues/10030

This new tool allows configuring the reset pin for nRF52-based
boards. As the reset pin configuration is persistent, it does not
make sense to include it into the board code...

Cppcheck was (correctly) warning here that concat to strings might
result in buffer overflow because the terminating `\0` was not considered.
This is fixed here, making the cppcheck suppression also obsolete.

Extend the cppcheck suppression example to show that each suppression
should have a reason describing the intentional suppression of a
cppcheck warning or error.

Adding and correcting description/rational on why certain cppcheck
warnings or errors are intentionally suppressed.

Add output to print_toolchain_version script to include info
on the operating system and its kernel version.

This adds openocd, python, python2, and python3 to the helper
script print_toolchain_versions.sh.

Currently version information of commands and tools is only parsed
from STDOUT, however some tools like openocd print version info
to STDERR only. This commits adds parsing of STDERR for version
infos if STDOUT does not contain such info.

When executing `make test` on devices using JLink, testrunner
launches `make term` which calls `jlink.sh term_rtt`. When finished
the father process is killed but `setsid` has launched JLinkExe
as another subprocess, which is not killed by `os.killpg` from
testrunner since it doesn't belong to the same group.