* 修改2处因curl版本太低,而造成的编译不过问题.
1. CURLOPT_MAX_RECV_SPEED_LARGE -> added in curl_7.15.5 - August 7 2006
2. CURLINFO_PRIMARY_IP -> added in curl_7.19.0 - September 1 2008
Merge pull request #99 from siren186/master

* 修改2处因curl版本太低,而造成的编译不过问题.