Update windows.md

https://github.com/cjdelisle/cjdns/commit/dbea9c182a8459c26e3a93b0cdf3722784a45b91
Move timeout into constant
Increase test timeout

Fixes #656
Merge branch 'raspi' of https://github.com/kpcyrd/cjdns
cannot run ./do twice in succession
Added penalty floating point packer/unpacker
Switch from using ifdef to using if(Defined) which is less likely to hide compile time errors