s390 support?

I know some of you use this.  We're thinking about using hercules (a
simulator) running debian with glibc2.3 as a build machine.  The old
images that we built were for glibc2.2 linux.  

So the question is do any of you actually need a glibc that old?

And while I'm here if you wouldn't mind replying privately if you 
are using BitKeeper on s390/linux I could take the discussion to
just the people who care.

Thanks,
-- 
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Larry McVoy                lm at bitmover.com           http://www.bitkeeper.com