Move DataTypes.h to include/llvm/System, update all users. This breaks the last
direct inclusion edge from System to Support.

llvm-svn: 85086
diff --git a/llvm/lib/System/Unix/Memory.inc b/llvm/lib/System/Unix/Memory.inc
index a80f56f..1b038f9 100644
--- a/llvm/lib/System/Unix/Memory.inc
+++ b/llvm/lib/System/Unix/Memory.inc
@@ -12,7 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "Unix.h"
-#include "llvm/Support/DataTypes.h"
+#include "llvm/System/DataTypes.h"
 #include "llvm/System/Process.h"
 
 #ifdef HAVE_SYS_MMAN_H