ARM exclusive monitor and multicore fixes (#589)

* Implement ARM exclusive load/store with compare exchange insts, and enable multicore by default

* Fix comment typo

* Support Linux and OSX on MemoryAlloc and CompareExchange128, some cleanup

* Use intel syntax on assembly code

* Adjust identation

* Add CPUID check and fix exclusive reservation granule size

* Update schema multicore scheduling default value

* Make the cpu id check code lower case aswell

ChocolArm64/CpuThread.cs

@@ -32,8 +32,6 @@ namespace ChocolArm64
             {
                 translator.ExecuteSubroutine(this, entrypoint);
 
-                memory.RemoveMonitor(ThreadState.Core);
-
                 WorkFinished?.Invoke(this, EventArgs.Empty);
             });
         }