Another patch attached, with the only difference being the brackets not 
on a new line.

On 21/06/15 14:41, Mark H Weaver wrote:
> Is there any reason to build the single-threaded version?  Maybe it
> would be better to omit it, and call the multi-threaded version
> FastTree.  What do you think?
I considered this. I have only ever used the multithreaded version, but 
the one advantage of the single-threaded mode is that it is 
deterministic as I understand, where the multi-threaded version is not. 
 From the webpage:

 > FastTreeMP will not give exactly the same results as FastTree because 
the top-hits heuristics become non-deterministic

Ubuntu has separate fasttree and fasttreeMP for reference.

Thanks for the comments and encouragement.
ben