Start a new algorithm directory.
updated status
Add verbatim copy of the blopex code
Simplify the blopex directory structures
More blopex simplification
Add makefiles for blopex.
Provide some blopex demo code.
Add build saftey tests, so users don't blow up.
Status update
Updated MOSES documentation
MOSES metapop trees to be member, not superclass.

Treeting the rather large, complicated metapop struct as if it was a
simpler iterable is confusing.  It also prevents the proper accounting
of tree addition and removal.
Merge pull request #787 from linas/clus

preliminary work on clustering demes in MOSES