Transforms: Introduce Transforms/Utils.h rather than spreading the declarations amongst Scalar.h and IPO.h

Fixes layering - Transforms/Utils shouldn't depend on including a Scalar
or IPO header, because Scalar and IPO depend on Utils.

llvm-svn: 328717
diff --git a/llvm/lib/Transforms/Utils/InstructionNamer.cpp b/llvm/lib/Transforms/Utils/InstructionNamer.cpp
index 23ec45e..003721f 100644
--- a/llvm/lib/Transforms/Utils/InstructionNamer.cpp
+++ b/llvm/lib/Transforms/Utils/InstructionNamer.cpp
@@ -17,7 +17,7 @@
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Type.h"
 #include "llvm/Pass.h"
-#include "llvm/Transforms/Scalar.h"
+#include "llvm/Transforms/Utils.h"
 using namespace llvm;
 
 namespace {