library/RLCMAC_CSN1_Types: fix definition of PacketDlAssignment

  - s/PacketDlAssignmentRel1999SubStruct/PktDlAssR99EGPRS/g,
  - fix Additions in Release 1999 (missing spare bit),
  - fix RLC_MODE field (it takes 1 bit, not 2),
  - fix PRESENCE(p0) attribute (defined twice).

Change-Id: I98efe66bf43853b580f38bed36487fa10a53298a
diff --git a/library/RLCMAC_Templates.ttcn b/library/RLCMAC_Templates.ttcn
index a217f46..5bdc17d 100644
--- a/library/RLCMAC_Templates.ttcn
+++ b/library/RLCMAC_Templates.ttcn
@@ -504,13 +504,8 @@
 						pwr_ctrl := *,
 						tbf_starting_time_present := ?,
 						tbf_starting_time := *,
-						release1999 := '1'B,
-						sub_present := ?,
-						sub := *,
-						pkt_ext_ta_present := ?,
-						pkt_ext_ta := *,
-						compact_reduced_ma_present := ?,
-						compact_reduced_ma := *
+						spare := '0'B,
+						rel_additions := *
 					}
 				}
 			}