fix package_len not enough problem.
add GO parallel config
Fix restore_one missing restore record problem.

If redis_data doesn't exist, redis_data[any_key] would return ""
string, and "version" section is missing on some player data.
Then restore_one would skip that one on previous implement.
Merge pull request #11 from spin6lock/add_jsonrpc_pkg_len

Fix jsonrpc package header problem, fix restore problem