src: use new library libosmogsm and new path to headers in libosmocore

libosmogsm is a new library that is distributed in the libosmocore.
Now, openbsc depends on it. This patch gets openbsc with this
change.

This patch also rewrites all include path to the new
osmocom/[gsm|core]

Signed-off-by: Pablo Neira Ayuso <pablo@gnumonks.org>
diff --git a/openbsc/include/openbsc/gsm_04_11.h b/openbsc/include/openbsc/gsm_04_11.h
index 5969788..5f400ff 100644
--- a/openbsc/include/openbsc/gsm_04_11.h
+++ b/openbsc/include/openbsc/gsm_04_11.h
@@ -1,7 +1,7 @@
 #ifndef _GSM_04_11_H
 #define _GSM_04_11_H
 
-#include <osmocore/protocol/gsm_04_11.h>
+#include <osmocom/gsm/protocol/gsm_04_11.h>
 
 #define UM_SAPI_SMS 3	/* See GSM 04.05/04.06 */