Set the application module name with APPLICATION_MODULE.
The default module name is "application_$(APPLICATION)".

This should fix name conflicts where an application/test has the same name as
an existing module and so both write to the same archive.

gnrc_ipv6_nib: ignore corner case when adding to PL

In #8135 the handling of corner cases for the conversion of
milliseconds to seconds, but the internal handling was not adapted.

boards: rename nucleo144-f207 to nucleo-f207zg

boards/nucleo*: fix doxygen grouping

gnrc/netreg: fix assert

board/native: add periph_hwrng and init

tests/gnrc_ndp: add device type handler to netdev mock-up

By providing a getter for `NETOPT_DEVICE_TYPE` the assertion failed in
\8458 is not hit anymore.

vagrant: sync with host time

samd21/cpu DFLL lock loop error

gnrc_ipv6_nib: release packages for forwarding error cases

pkg_littlefs: call mtd_write with size == prog_size

ethos: handle EOF on stdin

tests: fix some minor issues with auto tests scripts

tests: deactivate DEVELHELP for unittests

unittests/littlefs: fix unittests

Dummy RAM mtd was too small to run unit tests correctly.
Added some sectors and reduced page size.

gnrc_ipv6_nib: fix final RA behavior

This fix

* assures that the periodicity of the final router advertisements is
  kept (so that no administrative change e.g. adding prefixes to the
  prefix list causes additional RAs outside the rate limitation)
* removes all administrative options (PIO, ABRO, 6CO) from final router
  advertisements (with router lifetime == 0)

In my opinion it doesn't make sense to activate DEVELHELP for unittests
because it also causes the evaluation of `assert()`. This causes the
tests to crash for values the tests test intentionally (because it is
the point of the unittests to test also some unexpected values and how
this influences the behavior).

boards/arduino-mkrfox1200: add board configuration for ata8520e

drivers/ata8520e: add initial implementation (without netdev but provides Sigfox feature)

boards/arduino-mkrfox1200: add initial implementation (without SigFox)