[SPIN RFE] Include gvfs-archive

Hi all, I've been pondering right now how to mount ISO from within Thunar and found that the required functionality is in gvfs-archive, which was not installed on my system (f20 xfce live + various things I installed afterwards). I wonder if we could include it in the xfce spin/group, so that people can easily mount compressed archives, isos, etc. It works in Thunar pretty well, unmount included. Regards, Martin