1、增加cookiejar支持
2、增加Setting结构，便于统一设置请求参数
3、增加服务端测试php脚本
1.gofmt httplib.go httplib_test.go
2.replace test url to http://httpbin.org functions
1.gofmt httplib.go httplib_test.go
2.replace test url to http://httpbin.org functions
remove httplib_test.php
remove httplib_test.php
Merge pull request #631 from curvesoft/master

cookiejar support
merger master httplib