eliminate RegisterOpt.  It does the same thing as RegisterPass.

llvm-svn: 29925
diff --git a/llvm/lib/Transforms/Scalar/LowerPacked.cpp b/llvm/lib/Transforms/Scalar/LowerPacked.cpp
index b24460c..79a55ee 100644
--- a/llvm/lib/Transforms/Scalar/LowerPacked.cpp
+++ b/llvm/lib/Transforms/Scalar/LowerPacked.cpp
@@ -102,7 +102,7 @@
    std::vector<Instruction*> instrsToRemove;
 };
 
-RegisterOpt<LowerPacked>
+RegisterPass<LowerPacked>
 X("lower-packed",
   "lowers packed operations to operations on smaller packed datatypes");