This way we can still record useful debugging information like reset
reason.

Supply contiki as testcase classname as jenkins doesn't play nice with
an empty name

There was a problem where the test wouldn't retrieve all queue items
after all the threads were finished. This resulted in some of the
reports missing from the logs.

This hopefully resolves an issue where one device in a test didn't start
recording.

This is useful when testing something making small changes and rerunning
the test.

The devices now don't create an extra directory inside the test cases
which is much clearer now.

This makes sure that on directories are created for the tests that are
disabled.

* Include failure reason in the final report
* Return value now indicates how many tests failed

This fixed a problem in Ubuntu where avr-gcc did not find cc1

* TEST_REPORT can be used multiple times within a program in order to
  report metrics of different tests performed.
* TEST_PASS now takes no argument
* TEST_FAIL returns a failure reason
* Adapt the programs using it

There was an invalid format string in one of the options' help messages.

* Support for named profile reports, saves them in different files
* Use queues to control the threads and report back to the main test
  thread
* Work around a bug in the serial/ftdi device driver where the baud rate
  is not set correctly after a USB/FTDI reset
* Support timeouts for tests and abort a test
* Create a log file for each test as well

Use -fno-inline by default as inlining breaks profiling

With this patch the statistical profiler now obeys the ignore/only
options.
Output is aggregated by source line by default. This can be changed to
individual addresses with "--individual" or functions with
"--cumulative".

Splitting the list was broken, this is fixed now. Also the time
calculation completely ignores the calls from/to ignored functions