libyang UPDATE add prefix for common and config files

To avoid include conflicts.
diff --git a/src/context.c b/src/context.c
index 0c41019..9d379c6 100644
--- a/src/context.c
+++ b/src/context.c
@@ -32,10 +32,10 @@
 #include <sys/stat.h>
 #include <unistd.h>
 
-#include "common.h"
 #include "compat.h"
 #include "hash_table.h"
 #include "in.h"
+#include "ly_common.h"
 #include "parser_data.h"
 #include "plugins_internal.h"
 #include "plugins_types.h"