Introduce new file for various measurements

The measurements include:
- DL bandwidth usage
- DL packet loss rate
- DL measurements by mobile
- UL measurements by BTS

In order to receive DL measurements from mobile, it must be enabled via
system information message at BSC.
diff --git a/src/gprs_debug.cpp b/src/gprs_debug.cpp
index 6da0d51..6f9e310 100644
--- a/src/gprs_debug.cpp
+++ b/src/gprs_debug.cpp
@@ -40,7 +40,7 @@
 	{"DRLCMACDL", "\033[1;33m", "GPRS RLC/MAC layer Downlink (RLCMAC)", LOGL_NOTICE, 1},
 	{"DRLCMACUL", "\033[1;36m", "GPRS RLC/MAC layer Uplink (RLCMAC)", LOGL_NOTICE, 1},
 	{"DRLCMACSCHED", "\033[0;36m", "GPRS RLC/MAC layer Scheduling (RLCMAC)", LOGL_NOTICE, 1},
-	{"DRLCMACBW", "\033[1;31m", "GPRS RLC/MAC layer Bandwidth (RLCMAC)", LOGL_INFO, 1},
+	{"DRLCMACMEAS", "\033[1;31m", "GPRS RLC/MAC layer Measurements (RLCMAC)", LOGL_INFO, 1},
 	{"DBSSGP","\033[1;34m", "GPRS BSS Gateway Protocol (BSSGP)", LOGL_INFO , 1},
 	{"DPCU", "\033[1;35m", "GPRS Packet Control Unit (PCU)", LOGL_NOTICE, 1},
 };