A lot of progress on altivec instructions.

Some bad results, still, and some instructions are not decoding right.

src/xenia/cpu/x64/x64_jit.h

@@ -41,6 +41,7 @@ public:
 
 protected:
   int CheckProcessor();
+  void DumpCPUInfo();
 
   X64Emitter*     emitter_;
 };