Upgrading through several versions via anoncvs

[Igor Zinovik]

 Hello, OpenBSD-misc readers.
I have old box which runs OpenBSD 3.6 and i want to upgrade it to last release.
So my question is can go directly to OPENBSD_3_9 or i have to go through all
further versions (3.6->3.7->3.8->3.9)? I'm worry about that further versions
switched to new compiler (this box has gcc-2.95), so can compile recent
sources without compilation errors and warnings?