Subzero: Use a "known" version of clang-format.

src/IceCfgNode.h

Index: src/IceCfgNode.h
diff --git a/src/IceCfgNode.h b/src/IceCfgNode.h
index c5b9ac572a9ce812b3c2ea53c7bcc9c09a7c0375..e3c3ee724f36ef642a29db6ba874c59c0360e069 100644
--- a/src/IceCfgNode.h
+++ b/src/IceCfgNode.h
@@ -91,15 +91,15 @@ public:
 private:
   CfgNode(Cfg *Func, SizeT LabelIndex);
   Cfg *const Func;
-  const SizeT Number; // label index
+  const SizeT Number;                 // label index
   Cfg::IdentifierIndexType NameIndex; // index into Cfg::NodeNames table
-  bool HasReturn;     // does this block need an epilog?
+  bool HasReturn;                     // does this block need an epilog?
   bool NeedsPlacement;
   InstNumberT InstCountEstimate; // rough instruction count estimate
-  NodeList InEdges;   // in no particular order
-  NodeList OutEdges;  // in no particular order
-  PhiList Phis;       // unordered set of phi instructions
-  InstList Insts;     // ordered list of non-phi instructions
+  NodeList InEdges;              // in no particular order
+  NodeList OutEdges;             // in no particular order
+  PhiList Phis;                  // unordered set of phi instructions
+  InstList Insts;                // ordered list of non-phi instructions
 };
 
 } // end of namespace Ice