Spearhead updates.

[Ryan C. Gordon]

So you know you aren't being neglected...

The initial Spearheard Linux port is done. It was easier to re-port it
than to merge my changes from mohaa 1.11 into the new code (there are a
LOT of code changes in Spearhead). When I say "initial" that means "it
builds and doesn't crash immediately", but for those following the
Battlefield 1942 beta, we all know that doesn't mean a whole lot.  :)

Currently, I'm waiting on a newer codedrop from EA, which is supposedly
making its way across the country as I type this. I'm hoping to have this
in beta sometime during the holidays, or right after them, but no promises
as to an actual timeframe right now.

--ryan.