[freeciv-ai] (PR#10203) Greedy CM algorithm

["Benoit Hudson" <bh@xxxxxxxxxxxxxxxxxxx>]

<URL: http://rt.freeciv.org/Ticket/Display.html?id=10203 >

> > Also, can you send a patch that does not include the old cm code, and 
> > that makes the necessary changes to the rest of the code 
> > (auto_arrange_workers)?

Here's the most minimal patch: it changes only cm.c and leaves the API 
untouched.
I went through and cleaned up the comments and a couple violations of the
coding standards.

One place I'm knowingly violating standards is that I have the 75-* comments 
demarking sets of related functions rather than demarking every function; then
I use a couple lines of normal C comments to document the function.  I find this
clarifies the overall structure of the code, but I don't feel strongly about 
this so
if y'all don't like it, I can easily change it.

cm_branch_bound.diff
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