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/libtrau/trau_mux.c b/openbsc/src/libtrau/trau_mux.c
index 712e22d..6451554 100644
--- a/openbsc/src/libtrau/trau_mux.c
+++ b/openbsc/src/libtrau/trau_mux.c
@@ -29,7 +29,7 @@
 #include <openbsc/subchan_demux.h>
 #include <openbsc/e1_input.h>
 #include <openbsc/debug.h>
-#include <osmocore/talloc.h>
+#include <osmocom/core/talloc.h>
 
 u_int8_t gsm_fr_map[] = {
 	6, 6, 5, 5, 4, 4, 3, 3,