添加报单相关以及口令更新的API和SPI方法

[DennisXie]

关联单#5

///用户口令更新请求 virtual int ReqUserPasswordUpdate(CThostFtdcUserPasswordUpdateField pUserPasswordUpdate, int nRequestID) = 0; ///报单录入请求 virtual int ReqOrderInsert(CThostFtdcInputOrderField pInputOrder, int nRequestID) = 0; ///报单操作请求 virtual int ReqOrderAction(CThostFtdcInputOrderActionField pInputOrderAction, int nRequestID) = 0; ///查询最大报单数量请求 virtual int ReqQueryMaxOrderVolume(CThostFtdcQueryMaxOrderVolumeField pQueryMaxOrderVolume, int nRequestID) = 0; ///请求查询报单 virtual int ReqQryOrder(CThostFtdcQryOrderField *pQryOrder, int nRequestID) = 0;

[DennisXie]

I got this issue.

[DennisXie]

Resolved in #28 , continue in #31