serial → util Relation

File in include/serial	Includes file in include/util
objhook.hpp	util_exception.hpp
objistr.hpp	strbuffer.hpp
objostr.hpp	strbuffer.hpp
rpcbase.hpp	retry_ctx.hpp
rpcbase_impl.hpp	retry_ctx.hpp
serialbase.hpp	bitset / bmserial.h
serialbase.hpp	bitset / ncbi_bitset.hpp