solve bug related to peer pointers
fix compromising bug in offer equalization.
add missing header
add random_source option.
remove annoying printing calls
add normalization of offers, such that in the optimization case, the total number of offers remain the same as in the normal one
bug fixing of the overlay module
fix bug in overlay building function
fix bug in the overlay building function
add copyright banner to overlay files
combine graph files, matrix eigenvectors and simulation
This commit bind together SSSim with the matrix module which can load from file ".edges".the centrality properties of the peers can be derived from the matrix to speed up the distribution