[Mammoth] Move Mutex and Semaphore to a separate folder.

lib/mammoth/CMakeLists.txt

@@ -7,11 +7,11 @@ add_library(mammoth STATIC
   src/debug.cpp
   src/init.cpp
   src/memory_region.cpp
-  src/mutex.cpp
   src/new.cpp
   src/process.cpp
-  src/semaphore.cpp
   src/thread.cpp
+  sync/mutex.cpp
+  sync/semaphore.cpp
   )
 
 target_include_directories(mammoth

lib/mammoth/sync/mutex.cpp

@@ -1,4 +1,4 @@
-#include "mammoth/mutex.h"
+#include "sync/mutex.h"
 
 #include <zcall.h>
 

lib/mammoth/sync/semaphore.cpp

@@ -1,4 +1,4 @@
-#include "mammoth/semaphore.h"
+#include "sync/semaphore.h"
 
 #include <zcall.h>