Adapting /usr/bin/xdg-open to recognize Mate too

[Stefano Karapetsas]

 >> In the interest of maximizing the usefulness of "xdg-open" for any 
popular
 >> desktop environment that exists for Linux, would it be politically
 >> feasible to adapt the official code for the next version of
 >> "/usr/bin/xdg-open" so that it can work properly for the Mate Desktop
 >> Environment?

 > Sure, please file bug(s) (preferably with patches), and I'll be happy 
 > to import/adapt things as necessary.

This is already available on xdg-utils git tree:

http://cgit.freedesktop.org/xdg/xdg-utils/commit/?id=b961235b197647d6649ef3d48d7cc2cecafe3d47

And it's already ok for next MATE release, where mate-open is deprecated 
for gvfs-open.