Make a new llvm/Target #include directory.
Move files from lib/CodeGen/TargetMachine to lib/Target
Move TargetData.h and TargetMachine.h to Target/{Data.h|Machine.h}
Prepare to split TargetMachine.h into several smaller files

llvm-svn: 566
diff --git a/llvm/lib/CodeGen/RegAlloc/RegClass.h b/llvm/lib/CodeGen/RegAlloc/RegClass.h
index 1d08502..efe1746 100644
--- a/llvm/lib/CodeGen/RegAlloc/RegClass.h
+++ b/llvm/lib/CodeGen/RegAlloc/RegClass.h
@@ -16,19 +16,14 @@
 
 */
 
-
-
 #ifndef REG_CLASS_H
 #define REG_CLASS_H
 
 #include "llvm/CodeGen/IGNode.h"
 #include "llvm/CodeGen/InterferenceGraph.h"
-#include "llvm/CodeGen/TargetMachine.h"
-
-
+#include "llvm/Target/Machine.h"
 #include <stack>
 
-
 typedef vector<unsigned int> ReservedColorListType;