Juggled Debug.h from ObjCARC.h to only the including cpp files that
actually have DEBUG statements. Also changed raw_ostream in said header
to be a forward declaration (removing an include).

llvm-svn: 173769
diff --git a/llvm/lib/Transforms/ObjCARC/ObjCARCOpts.cpp b/llvm/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
index 9ccc6ee..47c158c 100644
--- a/llvm/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
+++ b/llvm/lib/Transforms/ObjCARC/ObjCARCOpts.cpp
@@ -39,6 +39,7 @@
 #include "llvm/ADT/Statistic.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/Support/CFG.h"
+#include "llvm/Support/Debug.h"
 
 using namespace llvm;
 using namespace llvm::objcarc;