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/src/libbsc/handover_decision.c b/openbsc/src/libbsc/handover_decision.c
index d3f843a..3b81dde 100644
--- a/openbsc/src/libbsc/handover_decision.c
+++ b/openbsc/src/libbsc/handover_decision.c
@@ -24,14 +24,14 @@
 #include <stdlib.h>
 #include <errno.h>
 
-#include <osmocore/msgb.h>
+#include <osmocom/core/msgb.h>
 #include <openbsc/debug.h>
 #include <openbsc/gsm_data.h>
 #include <openbsc/meas_rep.h>
 #include <openbsc/signal.h>
-#include <osmocore/talloc.h>
+#include <osmocom/core/talloc.h>
 #include <openbsc/handover.h>
-#include <osmocore/gsm_utils.h>
+#include <osmocom/gsm/gsm_utils.h>
 
 /* issue handover to a cell identified by ARFCN and BSIC */
 static int handover_to_arfcn_bsic(struct gsm_lchan *lchan,