nofib oldest GHC to support?

[Ömer Sinan Ağacan]

Do we have a policy on the oldest GHC to support in nofib? I'm currently doing
some hacking on nofib to parse some new info printed by a modified GHC, and I
think we can do a lot of cleaning (at the very least remove some regexes and
parsers) if we decide on which GHCs to support.

I checked the README and RunningNoFib wiki page but couldn't see anything
relevant.

Thanks

Ömer