UE_list_t is now used as a separate list. It can be e.g. used in the
scheduler to mark groups of users. The original UE_list_t is renamed to
UE_info_t to reflect that it is a container for information about UEs.

* Simplify store_dlsch_buffer()
* Simplify assign_rbs_required()
* Simplify dlsch_scheduler_pre_processor_partitioning()
* Simplify dlsch_scheduler_pre_processor_accounting() and dlsch_scheduler_pre_processor_accounting_allocate()
* Simplify allocation printing

The original functions used in the fairRR scheduler have been moved to
eNB_scheduler_fairRR

* Remove MIMO_mode_indicator: it is simply not used ATM
* Remove min_rb_unit as parameter: function auto-detects
* Remove commented code
* Remove slice sharing/multiplexing: it is broken
* Remove UE sorting, add UE with add_new_ue() in MAC
  - UE sorting is useless overhead on every iteration, instead it should
    be governed by a scheduling algorithm (e.g., RR or PF)
  - The MAC keeps a UE list and automatically adds a UE
  - UE_list empty, set head to -1
* Remove slice_positioning: the slicing functionality is broken
* Remove unused/untested code

The original reset() function used in fairRR has been moved to
eNB_scheduler_fairRR.c

When a header is changed, all including files need to be recompiled,
too. Thus, including a header needlessly all over the place drives
compile times up without any reason.

Nr rrc configuration

See merge request oai/openairinterface5g!738

inline alone does only define a function without a corresponding
declaration. static solves this problem

rfsim works

an assertion fails in gnb (need to be fixed)

Merge branch 'NR_RRCConfiguration' of https://gitlab.eurecom.fr/oai/openairinterface5g into NR_RRCConfiguration

temporary changes for nr_ulsim. To be removed when new branch with SCF NR FAPI for PUSCH is merged in.

Develop integration 2020 week 11

See merge request oai/openairinterface5g!787

Merge branch 'NR_RRCConfiguration' of https://gitlab.eurecom.fr/oai/openairinterface5g into NR_RRCConfiguration