Adjust LD_LIBRARY_PATH for FreeBSD also; fallback to adjusting LD_LIBRARY_PATH when we don't know any better.

gtk config store pulled in libdl.so for us, so things fail
to link of the config store isn't enabled. This makes nsc
pull in libdl itself when its enabled.

forward a frame back to the wireless network only if the destination is associated, is a broadcast or multicast packet.

Fix compilation of Python bindings when libsqlite3 is not available (and so the class SqliteDataOutput is omitted).

New pybindgen and API rescan.  Extensive API description files changes because pybindgen now handles consts differently.