FixCling:UpdateDouble32 template name map.

Compiles, not sure that ResetClassInfo is what we want there or some other way to update, but that can be easily changed. :-)
Consider using const clang::Type *TMetaUtils::GetUnderlyingType(clang::QualType type);
and then
   clang::BuiltinType *bt = llvm::dyn_cast<clang::BuiltinType>(type);
   if (bt->getKind() == clang::BuiltinType::Float || bt->getKind() == clang::BuiltinType::Double)