doc: fix quick guide command order

sys/uart_stdio: remove unused rx_cb from header

git checkout can only work if you've already changed to RIOT folder.

Lua support - initial PR

kinetis: GPIO: Enable the correct IRQn on CM0+

xtimer_now64_continuity: Enable test run on CI

pkg: ndn-riot: initial import of ndn-riot as a package

- Lua print() function is only supported function
- Lua script is parsed at compile time and run in example

- download of v5.3.4 of Lua from git
- building using RIOT build system
- patched to remove the need for _times and _link to be
provided to Lua via newlib.

boards: add Ublox C030-U201

pkg/tinycbor: Initial import

net/gnrc/rpl: fix doxygen grouping

drivers/periph: add basic API to read/write data to EEPROM

tests/xtimer_now64: Start time measure after print

boards: use marketing name for stm32f769i-disco

cpu/cortex_common: fix indention in vector table

cpu/stm32f4: fix periph_cpu.h for f412zg and f446ze