Add spacefm-0.9.4, rochard-1.42

* SpaceFM 0.9.4 differs from portage tree with its GTK+ 2.x support,
  which isn't officially supported in Gentoo if the package(s) in
  question also support GTK+ 3.x.
* Rochard 1.42 is the latest version available on HumbleBundle.com

Both packages have been tested and confirmed to work on a multilib
amd64 stable machine.