Except for the weird _Eina_Mempool_Backend_ABI1/ABI2 work-around which is
completely internal and probably is of interest to noone (the only person
on Earth who will be interested in it in a decade will hate me for skipping
it).
It looks like doxygen doesn't appreciate having a group inside a group of
the same name and simply ignores any documentation coming from the parent
one.
Since the .x is included from the .h, it is always already inside the
group so simply remove the directive from the .x.
This fixes the documentation for all the functions which are declared and
documented in the .h and implemented in the .x.
Adrien Nader
Ghislain Loaec
Cedric Bail
Carsten Haitzler