gEDA: Icarus ivl_target.h

["Hawkins, Thomas" <thomas_dot_d_dot_hawkins-at-NOSPAMmedtronic_dot_com>]

Steve,

I see concat has been added to ivl_target.h.

At this point, how stable is the API?  And what's the status of Icarus synthesis?

I'm itchin to update the FNF backend.

-Tom