develop_integration_w20 into develop

Summary of changes:

• bug fixes
  • UE TDD fixes
  • PDCCH size computation (at phy level, still to be corrected at mac level)
  • DAI increment
  • fix run_enb_ue_virt_noS1 and run_enb_ue_virt_s1 to use Rel14 and have --xforms to work
  • compilation warning removals
  • better oaisim logging (print UE security keys, print version (git commit ID) at runtime, print working directory)

openair1/PHY/LTE_TRANSPORT/phich.c

@@ -135,6 +135,17 @@ unsigned char subframe2_ul_harq(LTE_DL_FRAME_PARMS *frame_parms,unsigned char su
 
     break;
 
+  case 4:
+     if ( (subframe == 8) || (subframe == 9) ) {
+       return(subframe-8);
+     } else {
+       LOG_E(PHY,"phich.c: subframe2_ul_harq, illegal subframe %d for tdd_config %d\n",
+             subframe,frame_parms->tdd_config);
+       return(0);
+     }
+
+     break;
+
   }
 
   return(0);