wip/netgen 1.5.277 NetBSD

NETGEN is a general-purpose netlist management system. It can read and write several netlist formats, including NTK (Caltech, CMU), WOMBAT (Berkeley), SIM (Berkeley), ACTEL (Actel Inc., Sunnyvale), and SPICE (Berkeley). In addition, a C-language embedded interface exists for specifying netlists directly. Please see the documentation file NETGEN.DOC

NETGEN was intended as an efficient specification language for hierarchical systems. Secondary features, such as testing isomorphism between two netlists, have been added over time. As netgen has primarily been used in its capacity as a netlist comparator, this has essentially become the primary useful feature of netgen.