Make SSP use Windows-specifc RNG
According to skruffy by way of arma, SSP may not be applied on our Windows builds: https://trac.torproject.org/projects/tor/ticket/10065#comment:31
I am not sure why not, or how skruffy checked. It looks like we are using -fstack-protector in our wrapper scripts.
Did skruffy use a tool like: https://www.microsoft.com/en-us/download/details.aspx?id=11910
Is it possible that those tools are simply not recognizing the MinGW version of SSP?