Moved mutex.c to a separate folder in order to cleanly wrap other threading primitives (and utils/mutex.h is now threading.h).

src/charon/credentials/credential_manager.c

@@ -18,7 +18,7 @@
 #include "credential_manager.h"
 
 #include <daemon.h>
-#include <utils/mutex.h>
+#include <threading.h>
 #include <utils/linked_list.h>
 #include <credentials/sets/cert_cache.h>
 #include <credentials/sets/auth_cfg_wrapper.h>

src/charon/credentials/sets/cert_cache.c

@@ -19,7 +19,7 @@
 #include <sched.h>
 
 #include <daemon.h>
-#include <utils/mutex.h>
+#include <threading.h>
 #include <utils/linked_list.h>
 
 /** cache size, a power of 2 for fast modulo */