unportable construct in gen-params

[Alexandre Oliva]

I'm installing the attached patch, under the `obviously correct'
rule.  I don't think this is related with the Solaris bootstrap
problems people have reported on release 1.1.2, but it's worth fixing
anyway...

-- 
Alexandre Oliva http://www.dcc.unicamp.br/~oliva IC-Unicamp, Brasil
{oliva,Alexandre.Oliva}@dcc.unicamp.br  aoliva@{acm.org,computer.org}
oliva@{gnu.org,kaffe.org,egcs.cygnus.com,samba.org}
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