added possibilty to import openwsn stack as external module
fixes to fit the new silence flag
make script more verbose and deal with CRLF line endings
added vtimer test case
added a README with compatibility information
fixing bug: don't reapply patch
socket: fix warning of void pointer arithmetic
demo: rename functions to avoid collisions
demo: fix printf handling
demo: make handler more error tolerant
icmp: fix warning of unused parameter
lowpan: fix wrong printf usage
tcp_timer: fix 'remove without use' behavior
fix regression from #251

remove thread_measure_stack_usage from kernel_internal.h again
thread_measure_stack_usage documentation

fix documentation - the return value is the opposite of what it said
add and improve comments
renamed space to space_free (the name is documentation as well)
thread_measure_stack_ usage -> free

Rename the function as its name suggests the opposite of what it does.
fix stack_size comment in ps.c
Merge pull request #518 from LudwigOrtmann/thread_measure_stack

Thread measure stack: usage => free
Merge pull request #510 from mehlis/test_vtimer_msg

added vtimer test case
fixes downloading the archive with each ```make -B```