[core][testNet] Modifies the use of the timeout library : 
* Creates a timeout.h and a timeout.c in static/tools/libraries/Timeout, with the correct include selected with an #ifdef.
* Creates millis() and micros() for linux (in static/core/linux/libraries/Millis).
* Modifies libraries accordingly (botNet & cie)
* Modifies the testNet projects accordingly.
* Also corrects some configuration in testNet_LPC (but not tested due compilation chain not installed correctly yet).