Migrate AR subsystem to C++

xtoskrnl/includes/i686/ari.h

@@ -25,6 +25,10 @@ XTCDECL
 VOID
 ArFlushTlb(VOID);
 
+XTAPI
+PVOID
+ArGetBootStack(VOID);
+
 XTCDECL
 ULONG
 ArGetCpuFlags(VOID);

xtoskrnl/includes/i686/kei.h

@@ -55,6 +55,6 @@ KepStartKernel(VOID);
 
 XTAPI
 VOID
-KepSwitchBootStack(IN ULONG_PTR Stack);
+KepSwitchBootStack();
 
 #endif /* __XTOSKRNL_I686_KEI_H */