libyang UPDATE add prefix for common and config files

To avoid include conflicts.
diff --git a/src/schema_features.c b/src/schema_features.c
index b4273df..9f6c368 100644
--- a/src/schema_features.c
+++ b/src/schema_features.c
@@ -23,8 +23,8 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "common.h"
 #include "log.h"
+#include "ly_common.h"
 #include "set.h"
 #include "tree.h"
 #include "tree_edit.h"