Implement inline memory load/store exclusive and ordered (#1413)

* Implement inline memory load/store exclusive

* Fix missing REX prefix on 8-bits CMPXCHG

* Increment PTC version due to bugfix

* Remove redundant memory checks

* Address PR feedback

* Increment PPTC version

ARMeilleure/Memory/IMemoryManager.cs

@@ -12,8 +12,9 @@ namespace ARMeilleure.Memory
         void Write<T>(ulong va, T value) where T : unmanaged;
 
         ref T GetRef<T>(ulong va) where T : unmanaged;
-        ref T GetRefNoChecks<T>(ulong va) where T : unmanaged;
 
         bool IsMapped(ulong va);
+
+        void MarkRegionAsModified(ulong va, ulong size);
     }
 }