New change in properties breaks SHDMC and forward walking

[Lucas Wagner]

Hi everyone,

I fixed a long-standing issue with the averaging, in which QWalk kept
way too much in memory. It was causing some issues with new
Average_generators that are rather large, and was in general
unnecessary. Unfortunately, to fix this problem, I had to break the
extra endBlocks() that were put in for these methods. Now, these
functions were not really implemented optimally, so if you use these
programs and would like to fix them, please let me know and we can
talk about putting them back into working order. New code is up on
google code.

Cheers,

Lucas