removed superfluous parameter in rpl_send()
tiny debug improvement for RPL
debug output when joining a dodag
fix rpl_find_preferred_parent
fix grammar in license header
fix native board license headers
GNU Lesser General Public License -> LGPLv2
check for transceiver module before auto_initializing cc1100 driver
Merge pull request #385 from OlegHahm/auto_init_cc110x

check for transceiver module before auto_initializing cc1100 driver
Merge pull request #353 from OlegHahm/rpl_send

removed superfluous parameter in rpl_send()
Merge pull request #358 from OlegHahm/fix_warnings

Fix warnings
Merge pull request #366 from OlegHahm/rpl_debug

tiny debug improvement for RPL
Merge pull request #375 from LudwigOrtmann/license_header_fix

fix grammar in license header
Merge pull request #361 from LudwigOrtmann/rpl_find_preferred_parent

fix rpl_find_preferred_parent
reverted 18e97f6dd5457538c7bf39c6abcf346f5a080ca5