Add counter at BTS level And statistics at TBF/MS level.

Adds spb counters at BTS level(show bts statistics).
Adds RLC/MAC downlink control msg at ms level(show ms imsi <imsi_val>).
Adds the number of coding schemes counter for UL at TBF level.

Change-Id: Icbe4ba95e34bea89ee36f532d099db68204b7c38
diff --git a/src/bts.cpp b/src/bts.cpp
index 603da56..a47d7d8 100644
--- a/src/bts.cpp
+++ b/src/bts.cpp
@@ -90,6 +90,10 @@
 	{ "llc.ul_bytes",               "full PDUs received   "},
 	{ "rach.requests",		"RACH requests        "},
 	{ "11bit_rach.requests",	"11BIT_RACH requests  "},
+	{ "spb.uplink_first_segment",   "First seg of UL SPB  "},
+	{ "spb.uplink_second_segment",  "Second seg of UL SPB "},
+	{ "spb.downlink_first_segment", "First seg of DL SPB  "},
+	{ "spb.downlink_second_segment","Second seg of DL SPB "},
 	{ "immediate.assignment_UL",	"Immediate Assign UL  "},
 	{ "immediate.assignment_rej",   "Immediate Assign Rej "},
 	{ "immediate.assignment_DL",	"Immediate Assign DL  "},