New setup.exe almost released (ATTN: CGF)

[Max Bowsher]

OK, I think it's time to promote the release candidate to full release 
status.

I tried to do this, but for some reason, the permissions on setup.exe only 
allow Chris to do this.

Please "mv setup-2.457.2.1.exe setup.exe" - it's in the right directory.
And also, the part of upset which puts a setup-version: line into setup.ini 
seems to be broken - no such line is currently appearing.

Max.