This commit tries to also fix the documentations of sicslowpan and
uip6 to reflect the current code state. I’m not sure if everything
makes sense.
sicslowpan: There are still some references to HC01, can this be
replaced by HC06?
uip6: Section about timers has changed, is this correct?
Doxyfile: The documentations reference static functions, to link to
them correctly EXTRACT_STATIC = YES is needed.
Congratulations you fixed 134 of doxygen's warnings (old: 134 new: 0).
