trouble matching ThinkPad X61 for video quirk

[Ben Liblit]

Problem solved: the FDI cache was not being rebuilt, so none of my 
changes were having any effect.  I didn't actually know of this cache 
until now, and I would have assumed that any such cache would be rebuilt 
automatically when necessary.  Apparently not.  After a manual rebuild 
("/usr/libexec/hald-generate-fdi-cache") and daemon restart, my quirk is 
now showing up in lshal.  Yay!

I expect to be sending a proper patch soon, once I've double-checked the 
fix to my satisfaction.