[SQUASH ME] nativenet: make nativenet independent of netdev
netdev.tests: Add unicode support to pexpect scripts
netdev: Provide maximum value of netdev_opt_t for further definitions
Merge pull request #1774 from authmillenon/netdev-opt-max

netdev: Provide maximum value of netdev_opt_t for further definitions
Merge branch 'netdev-test-dummy' into HEAD
Merge branch 'netdev-nativenet' into HEAD
sys: net: Initial import of a general interface to a network protocol
sys: net: Initial import of a basic MAC protocol layer
sys: transceiver: Provide an adapter to netapi module

Since netapi 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
netapi (e. g. uart_net in #1454).
netapi,basic_mac: Add capability to fire events with netdev_dummy
unittests: provide unittests for basic_mac
tests: transceiver: netapi: nativenet: Provide transceiver adapter tests
msp-430: fix linking for msp-430 boards

* see http://permalink.gmane.org/gmane.os.contiki.devel/13870