Should build and deliver 64-bit libtopo plugins
Currently we build and deliver both 32 and 64-bit versions of libtopo.so.1. However, the 64-bit version is not really functional because we don't build 64-bit versions of any of the libtopo plugins.
This has become annoying as there are places where I'd like to have libtopo link to rust via FFI, but the illumos/solaris version of rust only supports building 64-bit targets.
So this ticket is to cover the work to starting building and delivering 64-bit versions of the libtopo plugins.