Add #includes neccesary since they were removed from .h files

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1675 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/SparcV9/RegAlloc/LiveRangeInfo.cpp

@@ -1,4 +1,8 @@
 #include "llvm/CodeGen/LiveRangeInfo.h"
+#include "llvm/CodeGen/RegClass.h"
+#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Method.h"
 #include <iostream>
 using std::cerr;