added spark core board
auto_init: adapt auto_init for cc110x devices
rpl_udp: Addresses must only be 8-bit with cc110x
rpl_udp: optimize error handling for set command
Merge pull request #1728 from mehlis/add_board_spark_core

added spark core board
Merge pull request #1878 from authmillenon/rpl_udp-16bit-addr

rpl_udp: Addresses must only be 8-bit with cc110x
drivers - netdev: extend netdev_state_t enum
drivers - cc110x: Initial import of new cc110x driver
support new cc110x driver globally
sys - transceiver: make transceiver ready for new cc110x driver
boards - msbiot: prepare msbiot for new cc110x driver