Update Clang to reflect the new home of IRBuilder.h as of r159421.

llvm-svn: 159422
diff --git a/clang/lib/CodeGen/CGBuilder.h b/clang/lib/CodeGen/CGBuilder.h
index 8120217..a790a74 100644
--- a/clang/lib/CodeGen/CGBuilder.h
+++ b/clang/lib/CodeGen/CGBuilder.h
@@ -10,7 +10,7 @@
 #ifndef CLANG_CODEGEN_CGBUILDER_H
 #define CLANG_CODEGEN_CGBUILDER_H
 
-#include "llvm/Support/IRBuilder.h"
+#include "llvm/IRBuilder.h"
 
 namespace clang {
 namespace CodeGen {