added rust-std-bin (adopted from Heathers) - updated librsvg
makes "rust-bin" compatible with librsvg(Original bug: https://github.com/Heather/gentoo-gnome/issues/295) in addition to #3 (closed).
makes "rust-bin" compatible with librsvg(Original bug: https://github.com/Heather/gentoo-gnome/issues/295) in addition to #3 (closed).