JitArm64: Initial implementation of the BLR optimization.

Source/Core/Core/PowerPC/JitCommon/JitCache.h

@@ -58,6 +58,7 @@ struct JitBlock
     u8* exitPtrs;  // to be able to rewrite the exit jump
     u32 exitAddress;
     bool linkStatus;  // is it already linked?
+    bool call;
   };
   std::vector<LinkData> linkData;