ditsing/ruaft @ 712a8cc7359640260ee0821aeacfb027625cbc8b

Jing Yang 712a8cc735 Implement clerk without re-initialize.		%!s(int64=5) %!d(string=hai) anos
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client.rs	712a8cc735 Implement clerk without re-initialize.	%!s(int64=4) %!d(string=hai) anos
common.rs	712a8cc735 Implement clerk without re-initialize.	%!s(int64=4) %!d(string=hai) anos
mod.rs	a10c1015a9 Add RPC args and replies.	%!s(int64=4) %!d(string=hai) anos