Patch: fix fastjar -C

[Per Bothner]

Anthony Green wrote:
> jar was complaining that -C is an unrecognized option.  This appears
> to fix.

I just ran into the same bug, and a similar patch (attached - but
including some other stuff).

The difference is that my patch handles '-C DIR' as a unit, rather
than just handling '-C'.  Either should work, as long as DIR doesn't
start with a '-'.  I think the way I did it is probably cleaner, though.
-- 
	--Per Bothner
per@bothner.com   http://www.bothner.com/per/
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