Surprisingly, it touches every part of openair3, and most of the prototype.
Moreover, a special attention have been put to callback review.
However, there are still places to fix or review indicated by FIXME

This patch adds esm_data_t parameter to ESM functions.
This fixes a bug where the old _esm_data was redefined in all .o
Signed-off-by: Frédéric Leroy <frederic.leroy@b-com.com>

This patch merely adds a "user" object in all nas_* functions.
This don't move any data structure.
It allows next patches to be nicely split.
Signed-off-by: Frédéric Leroy <frederic.leroy@b-com.com>

Develop integration w03

See merge request !89

Hopefully the right argument is passed to this function.

changed the memory allocation of txdataF and beam_weigths

Conflicts:
	openair1/PHY/INIT/lte_init.c
	openair1/PHY/MODULATION/beamforming.c
	openair1/PHY/defs.h
	targets/RT/USER/lte-enb.c

Conflicts:
	targets/RT/USER/lte-enb.c
	targets/RT/USER/lte-softmodem.c

when testing on haswell, using apt-get to install LimeSDR
libraries and includes, it put it in /usr/include, not
/usr/local/include

this commit is here to help debug the previous ones.

It has to be reverted at some point.

We put an abort() at this point in the code, because
if the previous commit is correct, the program will
never comme here.

The previous version did not seem to work properly with
several UEs. I too often ended up with a list 'next' where
next[i] = i, leading to an infinite loop, crashing the
processing.

The sorting functions were hard to understand and too slow
anyway (O(n*n)).

We now use qsort_r and comparison functions, that should
define the same order as the previous version.

One important point is that the "next" lists and the "head"
variable are now considered invalid before calling sort_UE.

So all the code (coming before sort_UE) that looped using those
variables has been rewritten to loop over all possible UEs and
the first instruction of the loop is to exit the loop if the UE
is not 'active'. There is room for improvement here. We will
reintroduce a list of some kind at some point. Let's first
have something that works and then optimize. Today NUMBER_OF_UE_MAX
is 16, that's not a big deal.

Consequently, the add_new_ue and rrc_mac_remove_ue have also
been rewritten, hopefully for the better.

This commit is not a basic work and may introduce some
problems.