nmosh: Fix function decl. to match their prototypes
nmosh: Add experimental rootset functions

We have to reconsider API...
nmosh: Add bytevector-pointer equiv.
pcap: Do not mandate pcap on Win32
nmosh: Move gen-nmosh-stubs to a library (nmosh internal buildsystem gen-stubs)

Still a bit ugly...
wx: Introduce EVENT_HEADER(x) to implement event handlers