added network.set_mask to replace mask of the network with a given array
modified populate_equilibria for network so it accepts
mean_trajectory_length (mean trajectory lengths of the networks in the
family) as its input
modified populate_equilibria for family to take into account mean
trajectory lengths of the networks
modified search_equilibrium for network to extract trajectory if
needed.
corrected search_equilibrium
modified populate_equlibria for network to skip the states those belong
to trajectories already computed
The boolfuncs.c file was deleted on the deneme branch. I put it back.