depth.dat gives number of iterations to cover all network FR

at
origfig30/POLIT_TEX
Gqr_Frwiki_politiciansLsortP_Fr_40_4_2_followers.net 
Gqr_Frwiki_politiciansLsortP_Fr_40_4_2_friends.net
GR_Frwiki_politiciansLsortP_Fr_40_4_2_followers.net
GR_Frwiki_politiciansLsortP_Fr_40_4_2_friends.net
give all links for figs30-31
