Shuode Li

[DO NOT MERGE] Support SSL on Windows

1

This PR is for support SSL on windows, but still not completed for 2 block issue. 1. [schannel-rs](https://github.com/steffengy/schannel-rs) do not support set a flag, without the flag the connection will...

Lake of support on sha256_password authentication plugin

2

I'm using MySQL with sha256_password authentication plugin(https://dev.mysql.com/doc/refman/5.7/en/sha256-pluggable-authentication.html). This mainly because SHA1 which MySQL defaults is not secure. Please refer http://mysqlserverteam.com/protecting-mysql-passwords-with-the-sha256_password-plugin/ and https://blog.qualys.com/ssllabs/2014/09/09/sha1-deprecation-what-you-need-to-know I fount rust-mysql-simple do not support it which...