Move all of the DSA headers into the Analysis/DataStructure subdir.

llvm-svn: 14663
diff --git a/llvm/lib/Analysis/DataStructure/TopDownClosure.cpp b/llvm/lib/Analysis/DataStructure/TopDownClosure.cpp
index 47d4e2b..4635787 100644
--- a/llvm/lib/Analysis/DataStructure/TopDownClosure.cpp
+++ b/llvm/lib/Analysis/DataStructure/TopDownClosure.cpp
@@ -14,10 +14,10 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/Analysis/DataStructure.h"
+#include "llvm/Analysis/DataStructure/DataStructure.h"
 #include "llvm/Module.h"
 #include "llvm/DerivedTypes.h"
-#include "llvm/Analysis/DSGraph.h"
+#include "llvm/Analysis/DataStructure/DSGraph.h"
 #include "Support/Debug.h"
 #include "Support/Statistic.h"
 using namespace llvm;