mgw: Add statistics to RTP_Emulation and link/build it in mgw test

We're not using it so far, this is left for follow-up patches.

Change-Id: I40c322374cd99adb75a0f09175023fc0b12291d2
diff --git a/mgw/regen_makefile.sh b/mgw/regen_makefile.sh
index 9b94d69..2b7d1f4 100755
--- a/mgw/regen_makefile.sh
+++ b/mgw/regen_makefile.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
 
-FILES="*.ttcn SDP_EncDec.cc *.c MGCP_CodecPort_CtrlFunctDef.cc IPL4asp_PT.cc IPL4asp_discovery.cc TCCConversion.cc TCCInterface.cc RTP_EncDec.cc RTP_CodecPort_CtrlFunctDef.cc"
+FILES="*.ttcn SDP_EncDec.cc *.c MGCP_CodecPort_CtrlFunctDef.cc IPL4asp_PT.cc IPL4asp_discovery.cc TCCConversion.cc TCCInterface.cc RTP_EncDec.cc RTP_CodecPort_CtrlFunctDef.cc IuUP_EncDec.cc "
 
 ../regen-makefile.sh MGCP_Test.ttcn $FILES