Improve configuration module error management at init time, Fix command line help option processing, remove shotopt field from parameter structure

lte-softmodem -O <config file> will trigger legacy config mode
ltesoftmodem  -O libconfig:<config file> will trigger configuration module usage.

added configuration file for nFAPI PNF (oaiL1) and modifications in startup procedure to initialize L1 only. When executed, it just waits for configuration, which will never come ... Provides and initial framework to integrate NFAPI PNF modules.

addition of MPDCCH format 5. X_u_br sequences for BL/CE UE support and bugfixes in rx_prach0 for eMTC.

complete programming of Msg2/Msg4 procedures for eMTC. Addition of skeleton for PUCCH UCI (NFAPI) in L1. Some cleanup of eNB_scheduler.c

fixes for RRU/RAU function after changes for monolithic eNB (some things during init were broken for RRU)

L1/L2 scheduling extensions for BL/CE operation, BR random-access procedure, BR PRACH detection. Still untested, but compilation succeeds. Missing elements in L2 - PUSCH programming for Msg3, Msg4 retransmission programming for BL/CE. DLSCH/ULSCH programming for UE-specific DLSCH/ULSCH for BL/CE

Note: this commit is work in progress. Contains initial integration of NFAPI data structures which are tested for TX path. RX path to follow.

those popped up thanks to previous commit

- print current working directory
- print git version (if available)
- print security keys
  this last one is a security breach, but as of today
  it's not a problem

No need for this special case. Plus, it fails with the work
from Nokia on compilation cleanup.

----------------------------------------------------------
bug 29

Ttile:
FDD should be TDD.

Bug Location:
  switch (oai_emulation.info.frame_type[0]) {
  case FDD:
    frame_type = "FDD";
    break;

  case TDD:
    frame_type = "FDD";
    break;
  }
----------------------------------------------------------

----------------------------------------------------------
bug 18

Ttile:
Probably he/she wants to copy the contents of arrays, but
this coding doesn't copy anything, moreover index overflow
occurs.

Bug Location:
u2e_t[UE_id][eNB_id]->tx_data[3]=tx[eNB_id][3];
u2e_t[UE_id][eNB_id]->rx_data[3]=rx[NB_eNB_INST+UE_id][3];

Note:
Detected by CppCheck
----------------------------------------------------------
bug 19

Title:
Probably he/she wants to copy the contents of arrays, but
this coding doesn't copy anything, moreover index overflow
occurs.

Bug Location:
e2u_t[eNB_id][UE_id]->tx_data[3]=tx[NB_eNB_INST+UE_id][3];
e2u_t[eNB_id][UE_id]->rx_data[3]=rx[eNB_id][3];

Note:
Detected by CppCheck
----------------------------------------------------------
bug 20

Title:
Probably he/she wants to copy the contents of arrays, but
this coding doesn't copy anything, moreover index overflow
occurs.

Bug Location:
tx_data[3]=cthread->tx_data[3];
rx_data[3]=cthread->rx_data[3];

Note:
Detected by CppCheck
----------------------------------------------------------