Add three new control mechanisms to the front end to control the use
of emulated and linkdelays on a per-link/lan basis (although you cannot make a lan emulated at this time). tb-set-link-uselinkdelay $link0 1 tb-set-lan-uselinkdelay $lan0 1 tb-set-link-emulated $link0 1 Added slots to the virt_lans table, used in assign_wrapper to control these features on a per link/lan basis. Note, the global options are still available to prefer/force linkdelays for an entire experiment. When setting uselinkdelays on a per link/basis, if the link would not otherwise be shaped, you are requesting that a linkdelay be inserted anyway (in otherwords, its the equiv of tb-set-forcelinkdelays on an individual basis).