fixed-freq monitor dual-head with XF86 4.1.0

[Matthew Hawkins]

Doing some more testing, I haven't found out much more but did discover
that by switching heads (and appropriate setup in XF86Config-4) the Sun
monitor worked fine (the standard pc monitor whinged about freqs) with
the config I had.

This makes me believe there's some problem using the second head on the
Matrox G450.  Perhaps it doesn't like a multisync monitor on one and a
fixed freq on the other?

-- 
Matt