for review: add support for `-L' to ml

[Tyson Dowd]

> Hi,
> 
> Tyson, can you please review this one?
> 
> scripts/ml.in:
> 	Add support for `-L' (`--lib-dir').
> 	`-L' options are basically just passed on to the system linker.

Why did we want to add this support again? Should be in the log
message (just briefly).

Otherwise the change looks fine.

-- 
       Tyson Dowd           # There isn't any reason why Linux can't be
                            # implemented as an enterprise computing solution.
     trd at cs.mu.oz.au        # Find out what you've been missing while you've
http://www.cs.mu.oz.au/~trd # been rebooting Windows NT. -- InfoWorld, 1998.