Is this fork a vote of no confidence in the OpenSSL team? Is it guaranteed that this fork will be used in OpenBSD? Could this fork be used in Linux? Will they be cooperating with OpenSSL by sending them bug reports etc?
http://www.openssh.com/portable.html
Basically, that's the version that gets those sorts of patches.
I'd imagine if this reaches the point where people want to put the OpenBSD fork of OpenSSL on other platforms, a similar approach would be used.
It's been pretty successful for OpenSSH:
It already is used in OpenBSD. The changes are being made in the OpenBSD source tree.