moved debugging statements from header to c file

Additionally, declaring the stacks as static.
amendment - to be squashed
tests: add test that shows sequence of received messages
test_thread_msg_seq: add missing main() return statement
core:mutex: allow idle thread to use mutexes
shell: accept UTF8 input
shell: don't ignore IO errors
shell: add myself to authors
make: don't ignore failures in for loops

apply 9b61d95545446675ae136cf64f5c3af2d1cc6e22 to oonf_api
remove trailing whitespaces
silence git warning about detached head

use reset --hard to check out the desired revision
remove unnecessary comments from Makefile

remove leftovers from the example Makefile, they are unnededly printed during the build
native: config_load: set PID as id, net address
core: kernel_init: call config_load in kernel_init
Fixed an error in CC2420 register read function
Fixed errors in addresses/PAN setting functions
Merge pull request #877 from Kijewski/shell-utf8

shell: fix UTF-8 problem
fix oonf_api build with GNU Make 4.0

fixes #884
Merge pull request #882 from rousselk/cc2420_driver_fixes

CC2420 radio transceiver's driver fixes
abort on error when patching oonf_api