[EM] pSTV v0.5.2 beta

[Jeffrey O'Neill]

I've just added three more methods to pSTV (that are not STV):
     - Borda
     - Coombs
     - Condorcet SSD (adapted code written by Mike Ossipoff and Russ Paielli)
I plan to add other Condorcet completion methods in the future.

This should be considered a beta version as I haven't done any significant 
testing.  You can download from
     http://sourceforge.net/project/showfiles.php?group_id=91982&package_id=97113&release_id=269106
Because it is a beta version, this download is not available at 
http://stv.sourceforge.net.  Please send me any feedback or comments.

Jeff O'Neill