Reset the SAM3X8E before flashing
so as to avoid some hangups in the flashing process
Reset udoo's MCU before flashing
drivers: added servo motor driver
Merge pull request #1468 from haukepetersen/add_driver_servo

drivers: added servo motor driver
Merge pull request #1380 from rousselk/arduino-due-minor-fixes

Reset ARM Cortex-M3 MCUs before flashing
drivers: some improvements to the ADC driver IF

- removed UNDEFINED value from device enum
- added pre-defined precision values
- added power[on|off] functions
- some minor doxygen fixes
boards/arduino-due: some cleanup

- added parenthesis for LED macros
- changed mapping for LED_* to LED_RED_*
- removed some old values from periph_conf.h
boards/udoo: cleanup in periph_conf.h

- removed unused defines
Merge pull request #1479 from haukepetersen/fix_sam3x_minorfixes

board - arduino-due: some cleanup
Merge pull request #1469 from haukepetersen/fix_periph_adcif

drivers: some improvements to the ADC driver interface
sys: Initial import of a general interface to a network protocol
sys: net: Initial import of a dummy MAC protocol layer
sys: transceiver: Provide an adapter to basic_net module

Since basic_net is aimed to replace tranceiver one day, but porting
efforts usally take a while, this commit aims to provide access via
transceiver as we are used to for radio/network drivers that already implement
basic_net (e. g. uart_net in #1454).
nativenet: Prepare for dummy_mac compatibility
[WIP] Add tests for dummy_mac (+ basic_net)